JOYROOM Openfree JR-OE4 Open-Ear True Wireless Bluetooth Earphone(Black)

1. Pressure-free Comfort: Single headphone weighs only 10g, lightweight build and skin-friendly silicone ensure all-day comfort.
2. Ultra-long Battery Life: 12.5h on one charge, 50h with charging case, digital display shows remaining battery in real time.
3. Well-balanced sound: Built-in 16mm ultra-large speaker, clear and powerful audio quality.
4. Stable Connection: Latest BT 5.4 technology, auto reconnection, stable transmission, higher communication efficiency and stronger anti-interference ability.
5. Better Awareness: Stay connected to the world around you-when riding a bike, you can still hear the car horn, perfect for outdoor leisure, sports, office work, driving and family entertainment.
6. Specification:
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: 16 Ohm
Speaker size: 16mm
Overall size: 88.7x66.5x32mm
Material: ABS+PC
Weight: about 78.8g (single headphone: about 10g)