BS-E34 Echo · Bluetooth Earbuds | BLUESEED
Zhongke Lansi 5602B Bluetooth 5.4, 10-meter unobstructed transmission, 14mm four-hole speaker. 3.7V/220mAh polymer battery, 15-20 hours battery life, auto-off after 5-8 minutes. Type-C interface, supports volume/song adjustment, call answering, music/game mode, TF card, and battery display.

BS-E34 Echo · Bluetooth Earbuds
Bluetooth version: Zhongke Lansi 5602B V5.4 Transmission distance: 10 meters (no obstacles) Speaker diameter: 14mm, four-hole Usage time: 15-20 hours Standby time: 5-8 minutes auto-off Polymer battery: 3.7V / 220mAh Charging port: Type-C charging port Functions: Volume adjustment, track switching, call answering, music mode adjustment, game mode, TF card, battery level display.