1. Material: ABS+PC 2. 120 high decibel ringtone, small volume and loud sound 3. Can be hidden inside the handle without affecting other operations 4. Built-in boost circuit 5. USB charging, 180 days long standby 6. Suitable for all kinds of handles of 22-31.8 mm 7. One-key switch between three sound modes 8. Split multi-function keys 9. Waterproof, dropproof and dustproof 10. Built-in 280mAh lithium battery 11. Charging input: 5V, 250mA 12. Weight: 40g 13. Dimensions: 4.9x6.6cm
