Features: 3 in 1 function, including dual USB charger、thermometer、voltmeter, save more spaces and easier to use. Digital voltmeter as a battery tester for checking the state of your battery and battery charger. Built-in fuse ensure great safety and reliability. Independent switch, turn ON/OFF the charge when don'for t need to use, more enegy saving. The snap-on installation design enables quick installation and disassembly. Safe usage: the monitor has built-in fuse, making safe usage possible and causing no damage to your car. Easy reading: it screen is made of LED material, hence it is easy and convenient for you to read even in dim light. Specifications: Font Color: Red/Yellow Input voltage: 12-24 (V) Output voltage: 5 (V) Output current: 4200 (mA) Working temperature: -20-60 (℃) Output interface: USB Applicable charging range: motorcycle Style: handle Style: rearview mirror bracket Package Includes: 1x Motorcycle Charger note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.