Name: Open-Ear True Wireless Headphones Model: JR-OE2 BT version: V5.3 Audio decoding: AAC, SBC Supported protocols: HFP, A2DP, AVRCP Working frequency: 2402-2408MHz Max output power: 4±1dBm (EIRP) BT range: 10m (barrier-free open environment) Frequency response range: 20Hz-20KHz Speaker: φ16.2mm Music time: about 10h (70% volume) Calling time: about 5h (70% volume) Standby time (connected): about 120h Headphone battery capacity: 120mAh Case battery capacity: 600mAh Headphone charging time: about 1.5h Case charging time: about 1.5h Cycle counts: about 2 charging cycles Case charging port: Type-C Case charging input: 5V⎓500mA Material: ABS+silicone Net weight: single headphone-12g, charging case-60g