-Built-in lithium battery, support for 1.5 hours fast charging, provide up to ten hours of music / talk endurance.
-Bluetooth one with two to meet the needs of multi-source.
-With a play button, you can control the music player and make and receive calls and other functions.
Bluetooth Wireless Sports Earphones
Key parameters:
(1) Bluetooth version: CSR4.1
(2) Frequency response: 20-20000Hz
(3) Bluetooth usage frequency: 24Ghz
(4) Pressure transmission distance: About 15 meters (disabled)
Bluetooth Wireless Sports Earphones
After plugging it into the phone for the first time, please turn on the Bluetooth function in the “settings” of the phone. After a few seconds, the phone will find a Bluetooth device with the device name Lighting. Click the pairing connection to connect successfully. its connect automatically when Bluetooth is turned on.
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For Fitbit Charge 3 / 4 Band Replacement Wrist Strap Silicone Smart Watch Band (Small, Black)
1 × $13.00
For Fitbit Charge 3 / 4 Band Replacement Wrist Strap Silicone Smart Watch Band (Small, Black) 
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