This product is ADSL, Modem (cat), router. Mini-TV, 2.5-inch mobile hard disk, mobile DVD, TV box, wireless audio and video equipment, charging equipment, MP3 / MP4, small lamps, switches, game consoles, telephones, lanterns, cameras, monitoring equipment, DC / DC adapter for household / portable equipment Product Spec:
Input voltage: AC AC100-240V 50 / 60HZ
Output voltage: DC DC5V
Output current: 600 MA Voltage accuracy: ± 5% (no load)
Power polarity: inside and outside the negative, within the x (x)

This product is 5.5 * 2.1mm