1. Bluetooth chip: Jerry 6965E 2. Bluetooth version: V5.0 3. Audio system: mono 4. Maximum power: 8W 5. Frequency response: 80Hz-15kHz 6. Charging time: 3h 7. Music time: 8h 8. Battery capacity: 1800mAh 9. Bluetooth music: Connect Bluetooth devices and support mono 10. Speaker power: 8W 11. Waterproof level: IPX7 12. Supports power display, and can connect two devices in wireless series to form a 2.0 Bluetooth speaker effect.