I love this cordless headset, I would highly recommend them. The only fault they have is how long they stay charged. I use then everyday for 30-45 min so they have to be charged once a week.
JayBird JF4MBL Freedom Sprint - Midnight Black
Lightweight, SecureFit Athletic Sports Style In-Ear Wireless Bluetooth Headphones
The Perfect Gym Headphones
New and Improved Freedom Sprint
Almost everything in the Freedom Sprint earbuds has been enhanced. Taking the highly effective secure fit and high performance audio system from the original Freedom, JayBird has improved on practically every other factor, including the cord, made softer to lay exactly where you want it. The new Freedom Sprint headphones are over 40% smaller than the original Freedom and are compatible with any A2DP Bluetooth stereo device. If you’ve enjoyed Freedom, you are going to love Freedom Sprint.
Don't Let Your Music Become Distracting
The last thing you want to worry about while you're working out is ear fatigue. To combat this problem, JayBird specially designed the the Freedom Sprint headphones to eliminate listener fatigue. To accomplish this, the Freedom Sprint headphones are tuned to emphasize the sub-bass while reducing the ranges of the mids and extreme treble that can cause listener fatigue. The result of this special tuning is warm, thumpy sound that lets you turn up the volume without your ears getting tired. In addition to eliminating ear fatigue, the Freedom Sprint has fumble-free on-ear controls. Because the controls are on the actual ear tip housing rather than the cable you don't have to worry about accidentally ripping the earbud out of your ears while fumbling with the controls in between sets.
Your New Gym Partner
Sweat resistance may not seem like the most important thing you want from a pair of headphones, but if you're going to be wearing them at the gym and pouring sweat into them you're going to be thankful for it. The sweat resistance rating of the Freedom Sprint headphones means you can play and train hard without worrying about sweat damaging or even destroying your headphones. To seal the Freedom Sprint headphones, JayBird designed a specialized gasket seal under full-time compression to give the controls and housing a water-tight seal.
Comfortable Patented Sports Ear Cushions
The Freedom Sprint headphones were built with JayBird's patented sports ear cushions to hug the top, back and lower surface areas of your ears to give you the most secure fit on the market. In addition to the secure fit, these headphones are also incredibly comfortable. It doesn't matter if the headphone drivers are tuned to reduce ear fatigue if they aren't comfortable enough for all day use. JayBird included 3 different sizes of eartips and ear cushion fins to give you 9 custom fit options; these headphones are perfect for any ear.
- Freedom Sprint Wireless Bluetooth Headphones
- In-ear design
- On-ear music/call controls help avoid removing earbuds from ear
- X-Fit Over/under-ear fit options
- Signal Plus for skip free music outdoors
- Jenna Voice prompts for easy use
- Sweat-proof design
- 4.5 Hour battery life from rechargeable Lithium Ion battery
- Bluetooth Version: Bluetooth Class 2.1+EDR
- Designed with a snug fit for active people
- Includes different size tips for added comfort
- Main Color: Midnight Black
- Authorized Internet Dealer
- 1-year Manufacturer's Warranty
- Frequency Response: 20-20,000 Hz
- Sensitivity: 103 dB
- Nominal Impedance: 32 Ohms
- Cord Length: 1.2m
- Bluetooth Version: Bluetooth Class 2.1+EDR
- No. of Paired Devices: 2
- Standby Time: 100 Hrs
- Charging: USB (included)
- Frequency Band: 2.4 GHz
What's in the Box?
- JF4 Freedom Sprint Bluetooth Buds (Midnight Black)
- 3 pair ear tips (S,M,L)
- 3 pair secure fit ear cushions (S,M,L)
- Optional ear hooks
- Standard Micro USB Cable
- Premium Protective Carry Case
This is the design of the earpieces on the headphones. Some headphones go inside the ear, while others rest on the outside of the ear. This helps you know exactly what type of headphones you will be receiving.
In-Ear: The ear buds go into the ear. Most often, the right and left ear buds are two separate pieces.
Enclosed-Ear: Usually are found on the larger headphones. They rest on top of the ear and have padding for comfort, as well as enclosing the ear to the speaker. This type of headphone helps to filter out surrounding noise.
On-Ear: This type of headphone involves the speaker sitting gently on the ear without going in the ear or sealing it off.
Headphone type refers to the construction of the headphones.
Around the Ear means that the headphones wrap around the ear to provide a secure fit. This is most often seen in active and sports headphones.
Around the Neck means that the headphones wrap around the neck. This is also seen in active and sports headphones.
Earbuds means that the right and left sides of the headphones are separated and will fit securely into the ear. These are small, compact, and user friendly.
Over the Head headphones mean that the right and left speakers are connected with a support that goes over the head and rests on top. This is the typical headphone type.
This is the application that the headphones are designed for. Each application has unique features that make it perfect for particular uses.
DJ: These headphones are durable, loud, and will often allow for one ear listening.
Gaming Delivers explosive sound and allows you to communicate with others.
Home Hi-Fi: These audiophile headphones are engineered to produce high fidelity and accurate audio.
Home/Office: These headphones are designed to produce rich, brilliant sounds that the artists would appreciate.
Sports: Designed for active use. These headphones are made to stay in (or on) the ear during workouts.
Kids: Feature noise limiting technology so that your little ones don't damage their ears listening to music too loud.
On-the-Go: On-the-go headphones are lightweight and often fold up for easy storage and portability.
Student: Compact and rugged enough to survive life in a backpack; inexpensive enough to not hurt the wallet of a student.
Studio: Reproduce music perfectly without any coloration. Look here for reference quality studio monitoring headphones.
Traveler/Airplane: These headphones are compact, lightweight, and have a portable design.
The basic design of the headphones. There are 3 different types:
Open: Have ports that allow air through the back of the diaphragms, enabling the headphones to sound like the music is coming from an outside source.
Closed: Completely sealed and have no air passing through the diaphragms. Sounds like you are in a closed off room.
Semi-open: Have slots or ports in the back of the cup and are partially open. This allows for a mixed sound between an open and closed headphone.
Corded means that the headphones use a cord to transfer the audio signal.
Bluetooth means that the audio signal is transmitted from your device to the headphones via a Bluetooth connection.
Corded or Bluetooth means that the headphones can be used as corded headphones or as Bluetooth headphones. They have an input in one or both earcups for use as a corded headphone while they also have a built-in battery for use as Bluetooth wireless headphones.
Wireless means that the audio signal is transmitted wirelessly to the headphones.
The physical design of the driver in the headphones.
A balanced armature driver uses a coil wrapped around an armature which is held in between two magnets until it is stimulated by an electrical current. When stimulated, this armature is magnetized which causes it to rotate one way or the other around a pivot point which moves the diaphragm to create sound. Balanced armature driver headphones are generally earbuds and can have multiple drivers in each earbud.
Dynamic drivers are the most common driver type. They feature a permanent magnet, usually neodymium, a voice coil and a conical diaphragm to drive your music. A dynamic headphone driver looks pretty much identical to any typical home theater speaker.
Electrostatic drivers are made up of an extremely thin membrane, usually a coated PET film, stretched between two metal plates. An electrical signal is applied to the metal plates to create an electrical field which, depending on its polarity, draws the speaker diaphragm toward one of the plates which forces air through the perforations in the diaphragm which generates the sound wave.
A planar magnetic driver is made up of a large membrane suspended between two sets of oppositely aligned magnets. An electric charge is applied to the membrane to induce movement and produce sound waves.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
What is in the Box?
Replacement Ear Tips
Warranty and Return Policy
Summary of Customer Ratings & Reviews
April 24, 2014
50 of 59 found this helpful
agoura hills, ca
April 25, 2013
Ive had them for over a year. or two. got them when they first came out. Always happy with them. Last weekend did my usual MTB ride with them but left them in my jersey back pocket. Into the wash, into the dryer. Was excited cause I thought I could upgrade to the newest version. EXCEPT, Charged them up and listening to them RIGHT NOW. Cant ask for more.
45 of 52 found this helpful
March 13, 2014
I exercise a lot (treadmill/jog/ride).
- Good sound
- Great fit
- Great look
- Great packaging
- Great reception
I wish I had known about these a year ago. I seriously doubt I'll ever use another type again.
42 of 49 found this helpful
May 19, 2014
Feels very durable and I love the flat wire makes it much easier to untangle.Bluetooth works flawless. Volume levels are ample. Only downer I wish it had a bit more bass.
44 of 54 found this helpful
April 28, 2014
I was very pleased with my jay birds there light weight, durable and the best part there's NO LONG CORDS! The price was right for my budget.
40 of 48 found this helpful
March 7, 2014
I've had these for about a month and have no negative comments thus far. I was using the headphones that came with the apple iPod and iPhone before and these to me are a major upgrade. Yes, you have to remember to charge them after each use, but I can deal with that especially without having to deal with cords in my way!
36 of 42 found this helpful
May 25, 2014
Beautiful product does not lack anything. There is no defects
32 of 38 found this helpful
salt lake, utah
January 16, 2014
Great product, great sound, fast shipping, product was as described.
34 of 43 found this helpful
Pt arthur Texas
January 31, 2014
I recently purchased the Jay bird Sonic.
The sound quality is OK and the accessories are many
But so far every time I get ready to use it the battery is dead so I end up using my old headphones.
32 of 40 found this helpful
July 17, 2014
These are convenient headphones that fit well and do not fall out. I had to return the original headphones, however, because the power button was a little loose, which actually created a pretty annoying rattle when the earpiece was in my ear. This second set seems pretty good, though.
29 of 36 found this helpful
August 6, 2014
Excellent product, all on time and it works perfectly everything was sealed
27 of 34 found this helpful
September 30, 2014
A qualidade do som é bem legal , o problema desse fone é que para o som não cortar você precisa manter o dispositivo que esta tocando muito próximo e isso me incomoda bastante.
No caso do ciclismo que pratico não consigo colocar meu cel na bolsa do selim, porque fica impossível ouvir uma musica devido aos cortes.
Acredito que um fone que não tenha fio ter que manter a origem do som tão perto assim faz mais sentido ter um fone com fio.
26 of 33 found this helpful
Freedom Sprint (Midnight Black)
Internal Product ID
Wiring Diagram Legend
Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.