Series name: Jbuds Series Product name: True Wireless ANC Earbuds Model: JR-BC1 Type: in-ear Color: black, white BT version: V5.3 Chip: Jieli AD7003D Noise cancellation: about 35db±2db (about 22-23db) BT audio decoding: AAC, SBC Supported protocols: HSP, HFP, A2DP, AVRCP Working frequency: 2402-2480KHz Earbud battery capacity: 35mAh Case battery capacity: 380mAh Speaker impedance: 32Ω Rated power: 2*2mW Speaker: Φ13mm Music time: 6h-ANC Off; 5h-ANC On Calling time: about 4h (60% volume) Earbud standby time (connected): about 48h Earbud charging input: 5V⎓ 30mA Case charging input: 5V⎓ 1A Charging input port: Type-C Cycle counts: about 3 times Earbud charging time: about 1.5h Case charging time: about 1.5h Water resistance: IPX4 Material: ABS+PC Earbud weight: 4g Net weight: 48g