Chipset: Bluetooth 5.0 Chipset JL6936D8/BLUETRUM5376A2 Size: Earbuds: 17*18*37mm Charger Box: 67*38*25mm Weight: Earbuds:3.7g*2; Box: 38g Battery : Earbud :45mAh*2, Charger box :250mAh Color: Blue/White/RED/BLUE/GREEN/BLACK BT radio frequency : 2.400-2.481GHz Audio Frequency Range: 20Hz-20kHz Bluetooth Protocols : Headset/Hand free/A2DP/AVRCP/EDR/、AAC Operating Range: Up To 30 feet (10 meters) Talking Time: Up To 3.5hours Play Music Time: Up To 3.5hours Standby Time: Up to 120hours Charging Time : 1.5hours Compatibilty : ISO & Andirod and Windows PC device Click Method: Click Charging port: Type-c Waterproof: IPX5 Accessories : charging cable, User manual, Selling point: 1: Without primary earbuds and secondary earbuds 2: Low consumption with long endurance. 3: Wear comfortable, Quick Paring.