Bluetooth version: V5.3 Jerry AC6973D4
Supported protocols: HSP, HFP, A2DP, AVRCP
Battery capacity 33mAh (without protective board, earphone board lithium protection IC)
Charging compartment battery capacity: 320mAh (with protective plate)
Horn: 13MM
Charging time: 1.5h
Call duration: 5H
Playback time: 6H (80% volume)
Standby duration: 300H
Horn sensitivity: 109 ± 3dB
Horn impedance: 32 Ω
Microphone sensitivity: -38 ± 1dB
Input charging standard: DC 5V
Bluetooth working frequency: 2.402G-2.480G
Frequency response range: 50-20kHz
Maximum transmission distance: 15M
Voice prompt: supported
Multipoint connection: not supported
Wearing method: semi in ear
Instructions: Chinese and English
Interface: TYPE-C
Waterproof grade: IPX4
