BOROFONE BE7 Sports Wireless bluetooth 4.1 Earphone Anti-sweat Waterproof Music Headset

Specification: bluetooth version: V4.1 Protocols: A2DP, AVRCP, HSP, HFP Battery capacity: 90mAh Charging Voltage: DC 5V Standby time: app 180 hours Talk time: about 4.5 hours Music time:about 4 hours Effective distance: 10 meters Transmission Frequency: 2.4GHz Weight: 19g Features: 1. Clear voice, comfortable wearing. 2. HD sound quality. 3. Perfectly compatible with all kinds of bluetooth product. 4. bluetooth 4.1 version, more stable and faster transmission. 5. 19g light weight,free and comfortable. Package included: 1 x BE7 Sports Wireless Earphone 1 x User Manual 1 x Charging Cable