�Storage Box with charging function】Built in 50 mAh Lithium Polymer Battery , 4 -5Hrs For Talking and Playing(Full Charge approximately 1-2 hours), up to 40 Hrs standby time. Smart charging box is like a power bank with 450mAh capacity, can support 3-4 times charging for F1bluetooth earbuds.
�Real Wireless Separate Stereo】Offering Strong Wireless Signal, with a range of 33ft (10m), enjoy the freedom to move and the convenience of uncompromising sound quality.
�Lightweight and Ergonomic Design 】Ultra Mini Size&Lightweight, ergonomic design guarantees 100% Stable and Comfortable when walking, exercising, running, climbing, driving, skating, cycling, fishing and other outdoor sports.
�Universial Compatibility】Compatible with iPhone, LG, ipod, Samsung, HTC and other Bluetooth-enabled devices.
Chipeset: CSR64110V4.1
Bluetooth Working range: 10 m
Battery Specification: 50 mAh Charging Box 450 mAh
Talk about time: 4 H
Standby time: 55 H
Music time: about 3 H
Charging time: about 2 H
Profile: HFP, HSP, A2DP, AVRCP
frequency range: 2.4 GHz
IOS Power Display: YES
2 um Connection device: YES
Noise Reduction: CVC 6.0
audio decoding: SBC
charging input voltage: dc5 + 0.25 V
adjustment mode: GFSK, TT / 4 DQPSK, 8 DPSK