2/3/4 Port Socket with 1 USB and On/Off Switch.
Product Features :
• Short-circuit protection(Fuse Included)
• Keep voltage steady to prevent devices from overcharging
• For Use on 12V Vehicles Only.
• Convenient to charge your device while driving
• Suitable for Mobile Phones, Tablets, MP3 and More! 
• Mini switch design, push to On/Off, very convenient!

Product Specifications:
• Color: black Input voltage: DC 12V
• Total output power: 60W(except USB)
• Working Temperature: 0°-60°C
• USB Output voltage/current: DC 5V-Max 5.4V /1000mA