Specifications:

Name: True Wireless Earphones with RGB lights
Model: JR-TC1
BT version: V5.3
Audio decoding: AAC, SBC
Supported protocols: HFP, A2DP, AVRCP
Working frequency: 2402MHz-2483.5MHz
Max output power: 4±1dBm (EIRP)
BT range: 10m (barrier-free open environment)
Frequency response range: 20Hz-20KHz
Speaker: φ13mm
Music time:  about 6h (light off, 70% volume)
about 3h (light on, 70% volume)
Calling time: about 4h (light off, 70% volume)
about 2h (light on, 70% volume)
Standby time (connected): about 120h
Earphone battery capacity: 35mAh
Case battery capacity: 400mAh
Earphone charging time: about 1.5h
Case recharging time: about 1.5h
Cycle counts: about 4 times
Case charging port: Type-C
Case power input: 5V⎓1A
Material: ABS+PC
Net weight: earphone (single) 4g; charging case 51g