SVR-500 Automatic Voltage Regulator with Built-in 110v- 240v Up Down Voltage Transformer - 500 Watt 220v step down transformer 4-USB ports Output: 4 Amps

4-USB ports Output: 4 Amps or 4000mA Max +5V DC

Take your favorite tracks with you on your MP3 player

Converts 110/120 V to 220/240 V OR converts SINGLE PHASE  220/240 V to 110/120 V (switch is on back of unit)

3000 Watt maximum capacity heavy-duty continuous use transformer

Instead of running the heat throughout the house when you are resting

SVR-500 Automatic Voltage Regulator with Built-in 110v- 240v Up Down Voltage Transformer - 500 Watt 220v step down transformer 4-USB ports Output: 4 AmpsHeavy duty 500 Watt AC automatic voltage regulator, Wide Input Voltage Range With Meter Display Safe and reliable, large range of stabilization. Input Voltage Range: 80V 260V AC, Input Frequency: 50 60Hz. Output Voltage: 110V and 220V+ 5% AC This product is a relay type high accuracy household voltage stabilizer. Using it can regulate the big range fluctuating voltage into a general voltage output. 110V USA outlets accept 2 or 3 Prongs US Plugs and