GK-E055（electroplating process）
Bluetooth version V6.0
Bluetooth solution Jerry 7003D8
Audio coding protocol SBC, AAC
Effective range ≥ 10 meters
Headphone battery specification 30mAh protection board
Headphone charging time ≈ 1.5 hours
Charging case charging standard DC 5V1A
Approximately 4 times for headphone charging
Speaker size Ø 13mm
Speaker impedance 32 Ω± 15%
Frequency response range 20Hz~20KHz
Weight (single headphone) ≈ 4g
Weight (complete set) ≈ 49.5g
Supports Bluetooth protocols HFP, A2DP, AVRCP
Signal power level Class 2
Working Frequency 2.402 GHz-2.480GHz
Earphone charging voltage DC 5V ± 0.2V
Charging box battery specification 400mAh protective board
Charging time of charging box ≈ 1.5 hours
Connection standby time ≈ 35H
Cumulative battery life about 20H
Speaker sensitivity 116 ± 3dB
Charging box size 58 * 58 * 28.5mm
Single headphone size 29 * 19 * 19mm
The product normally includes one side with laser engraved logo and one side with parameters. If there is a silk screen requirement, the standard price is 0.3 yuan per side. Other requirements will be reported separately