[UPGRADED VERSION WITH ON\/OFF SWITCH]12v usb outlet adopted humanized design with a contact switch, solving the old version issue which always \On\ then waste the even reduce the life of car battery. Now you can control the ON\/OFF anytime for save and prevent the battery being drained when leave unused.[UPGRADED VERSION DUAL QUICK CHARGE 30 USB OUTLET]Support dual Quich Charge 30, you can charge two compatible devices simultaneously up to 4X faster than conventional charging, From 0 to 55% in 35 minutes; Backward-compatible with QC 20 &10, and deliver the fastest possible charge to all non-quick charge device.[WIDE COMPATIBILITY FOR DC 12\/24V CAR]Compatible for DC 12\/24V car, boat, marine, motorcycle, ATV, RV etc. This USB Socket is suitable for charging Galaxy S9\/ S9+\/ S8\/ S8+\/ S7, 8\/ 8 Plus\/ X\/ 7\/ 6S, Note 9\/ , , tablets, banks, controllers, etc.[SMART IC CHIP SAFE PROTECTION & HIGH QUALITY MATERIAL]12V USB Outlet adopted smart IC chip which can defect your devices intelligently and provides most suitable current for them, come with Over-load, Over-current and Short Circuit Protection to charging safety, guard the safety of your devices.[HUMANIZED DESIGN & ACCESSORIES ]Digital LED Display for more convenient to check the car charger connection status and easy to use at night or in the dark. Exclusively provide a 11inch Stainless Steel Puncher, easily drill a 11inch hole for convenient to install the car usb socket.Input Voltage: DC 12 V-24 VMAX : 36 WOutput of each usb port : DC 36-65V\/3A, 65V-9V\/2A, 9V-12V\/15AWaterproof Rating: IP 66colour:BlackMaterial:Copper+ABSsize:Cable length 60CMPackage Contents:1 x Car 1 x Wire with 10A fuse1 x 11 inch (about 28 cm) stainless steel hole punchOnly 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.