LETUSHI A7Air Manual De Usuario página 5

Basic Specifications of Earphone
Size: 153*122*12mm
Earbuds Charging time: 1.5 hour
Standby time: 210 hours
Music Time: 5 hours
Voice Time: 4 hours
Bluetooth version: V4.1
Support Profile: HFP, HSP, A2DP, AVRCP
Transmission distance: 10m
Working temperature: -10℃～45℃
Microphone frequency response curve