Features1CNC aluminum alloy and plastic, super light and durable. 2Includes 3 adapters, respectively compatible with Garmin computer, for Bryton computer and mobile phone. 3Easy to install on the top of the stem.SpecificationFeatures:CNC aluminum alloy and plastic, super light and durable.Includes 3 adapters, respectively compatible with Garmin computer, for Bryton computer and mobile phone.Easy to install on the top of the stem.Specifications:Material: Aluminum alloy & PlasticColor: Black / Blue / Golden / Red / Titanium (optional)Size: Approx. 34.91 * 11.06mm / 1.37 * 0.43inWeight: Approx. 32.9g / 1.2ozPackage List:1 * Base1 * Adapter for Bryton1 * Adapter for Garmin1 * Adapter for Mobile PhonePackage List1 * Base1 * Adapter for Bryton1 * Adapter for Garmin1 * Adapter for Mobile Phone