Compteur kilométrique extérieur électrique étanche portable Bluetooth audio

Unique Product Design: 1. Dust cloth design 2. Anti-collision steel mesh reinforcement 3. True 5W speaker, HIFI sound quality, pure and thick sound at maximum volume, obvious vibration rhythm, no weird harsh sound; Pure sound at low volume, pleasant sound in the ear, clear all worries and enjoy high quality of life 4. Zinc alloy outer frame, soft and hard adhesive double color film, not afraid to reverse 5. Bicycle fi bracket 6. Non Slip double silicone gasket 7. Bluetooth 5.0 series products, 10 meters transmission worry-free 8.IPX65 rain-drenched Waterproof, far stronger than IPX5 life Waterproof 9. Charge for 2 hours and listen to songs for 8 hours (volume 60%) 10. Exclusive PCBA design, independent design and research.