2-in-1 charging cradle for cellphones around 3.5-6 inchesInput voltage 12-30V，automatic power off when voltage exceeds 30V， well protect your devices as well as supply power5V o utput voltage， output current is up to 1.8A， fast and stable power supply4 non-slip rubber feet fix your cellphone firmly in place. No worry of bumps. Can be installed in motorcycle and electric vehicles with rearview mirrors Product Material: Steel Product Size: LWH: 11.2cm x 5.7cm x 5.0cm， mounting hole size 1.6 x 1cm Input voltage: 12V-30V Product ine length: 100cm Output voltage: 5V Output current: 2A Applicable models: 12V motorcycles， electric cars Installation method: unscrew the rearview mirror of motorcycle， and put the handle of mirror right through the mount hole， then fix the mount in place Wiring : Red cable connected to positive， black wire to the negative Advantages: [1] Input voltage 12V-30V. Automatic power off when voltage exceeds 30V， well protects your devices [2] has a USB interface， no worry about died phone battery [3] easy installation [4] non-slip rubber feet which are softer， no scratch to cellphones [5] supports 360 degree rotation 1 x phone holder 2 x patch 2 x non-slip rubber feet