1. Dust-proof cloth mesh design, anti-collision steel mesh reinforcement2.5W speaker, HIFI sound quality, pure and thick sound at maximum volume, obvious vibration rhythm, no strange harshness; pure sound at low volume, pleasant sound into the ears, clear all worries, and enjoy high-quality life3. Zinc alloy outer frame, soft and hard rubber two-color film, not afraid of being upside down4. Bicycle fixing bracket, non-slip double silicone gasket5. Bluetooth 5.0 series products, worry-free transmission of 10 meters6.IPX7 level rain type waterproofSpecifications:1. Bluetooth version: V5.02. Bluetooth range: 10M3. Charging time: 2.5-3 hours4. Working voltage: 5V/1A5. Working hours: 10 hours at 60% volume6. IP rating: IPX78. Battery capacity: 750mAh9. Speaker function: 5W10. Frequency response range: 20Hz-20Khz11. Product size: 8x8x4.2cm12. Product weight: 180g13. Packing list: Bluetooth speaker X1, bicycle stand X1, USB charging cable X1, clip X1, audio cable X1, manual X1