1. Multifunctional Bluetooth Smart Remote Control, Bluetooth Song Switching, Answering Calls, Long Standby, Waterproof And Anti-Slip 2. Ip6 Waterproof, Upgraded To Fully Waterproof 3. Multiple Scenes, Easy To Control 4. Intelligent Ai Chip, Smooth And Power-Saving. The Newly Upgraded Chip Cooperates With Bluetooth 5.3 To Reduce Power Consumption. It Can Continuously Connect Up To 10 Meters And Has Strong Anti-Interference Ability. 5.180 Mah Large Battery, Lower Power Consumption And Long-Lasting Battery Life Inner Diameter: 86mm Applicable Models: Motorcycles, Electric Vehicles, Bicycles And Scooters Note: Different Batches May Have Differences In Product Appearance, Color, And Printed Characters, Which Not Affect The Use Colour:As Shown Material:ABS+Silicone Package Contents: 1 x Control Button Remote Control 1 x Connecting Cable 1 Set x Screw Installation Tools 1 x Instructions In Chinese And English 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.