Power: 7.5W; Bluetooth chip: AC6956C; Bluetooth version: V5.4BR++BLE specifcalsor; Horn: φ33 mm, 4ω, 10W; Battery: 3.7V/500 mA, poly-platform battery; Charging: Type C, DC 5V/1-2A; Pick and play time: about 4 hours, 70% volume. Standby time: about 6 months; Product size: φ 52.5 x h27.5mm. Magic mini portable bone-guided vibration speaker Feel different sound effects by sticking to different objects. Bone conduction sucker+magnetic suction box Mini portable speaker Support interconnection Multi-element vocalization Colorful RGB atmosphere lamp 360 Omni-directional Sound Effect Pengbai Bass Metal Body Metal diaphragm shocks HIFI sound quality Strong acoustic configuration, surging power, clear and transparent sound. Experience the fun brought by black technology. colour: As Shown material: Metal + Aluminum Package Contents: 1 * Bone Conduction Speaker 1 * Data Cable 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.