JR-OE4 Open-Ear True Wireless Headphones-Black

Series Name: Joyroom Openfree OE4
Model: JR-OE4
BT version: BT5.4
Audio encoding/decoding format: AAC, SBC
BT range: 10m
Water resistance: IPX4
Music time (50% volume): 12.5h
Music time (50% volume) with charging case: 50h
Battery capacity: 80mAh (headphones)/800mAh (charging case)
Charging time: about 3h
Charging input: 5V⎓1A
Charging port: Type-C
Frequency response range: 20Hz-20KHz
Max output power: 20mW
Speaker impedance: 16Ω
Speaker size: Ф16mm
Overall size: 88.7*66.5*32mm
Material: ABS+PC
Net weight: about 78.8g (single headphone: about 10g)