Feature of C500 wireless charger pad 1 input power: DC5V / 1.5A 2 Specifications: 60 x 60 x 12.5mm 3 Weight: 45g 4 Charging efficiency: 74% 5 Transmission distance: 6mm 6 Implementation of standards: Qi wireless charging standard 7 Colors: black 8 Main description: meet WPC_Qi standard wireless charging platform / unlimited transmitter / transmitter cradle unlimited / unlimited charger one to a single-coil device charging. Feature of wireless charger receiver It is specially designed for Samsung Galaxy Note 2. Ultrathin design compact and light weight without increasing additional weight of the Note 2. Adding wireless charging feature by piggybacking it on the battery of Note 2 it works well with any Qi-enabled charger. Easy to use. The receiver can be attached to the the battery all the time and it would not interrupt the normal use of the Note 2. Specifications: Color: Black Input power: WPC 5W Output: 800mA Charging current: DC5V/500mA (Max) Charging time: about 5 hrs Reaction temperature: -10 ~ 40 degree Working heat up range: below 20 degree (ambient temperature below 25 degree) Working ambient humidity: below 80% Working life: Charge & discharge above 4000 times Size: Approx. 65 x 54 x 1mm Weight: 5g / 0.17oz