Scope of application: The suitable of the lens holder is 1CM, and the suitable of the faucet is 2.2CM Applicable models: DC12V motorcycle The USB port of the product has a high-quality soft rubber cover, which is waterproof and dustproof There is a compass on the top of the product to point you to the way forward Equipped with two mounting brackets for handlebars and rearview to meet your different installation needs Product name: Compass charger Input voltage: 9-24V Output parameter: 5V/2.5A size:45mm in diameter Material:ABS colour:Black Package Contents: 1 x charger 1 x Faucet bracket 1 x Mirror holder Only the above package content, other products are not included. Note: Light 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.