Specification: Product model: M28 Driver power: 32 ohm-0.0015 mW*2 copper ring Driver: 8mm*2 bluetooth version: JL 6983/5.1 bluetooth distance: 10-12 meters Earbud battery: 50mAh Charging case battery: 2000mAh Playing time: 4-5H Talk time: 4-5H Earbud charging time: 1H Charging time of charging case: 1H Functional operation: dual-mode dual-decoding, game/music mode can be switched at will, allowing you to have a better live experience Product size: 85*55*30mm Product weight: 98g Packing size: 100*70*40mm Package weight: 120g Packing list: 1 * bluetooth Earphones 1 * Charging Cable 1 * User Manual 1 * Package Box