Material: metal and plastic. Input Voltage: 100-240VAC Output Voltage: 4.2V Output Current: 1A Frequency: 47-63HZ Plug Type: EU plug Number of Slat: 2 Slat It can charge 2 batteries at a time Compatible with: 18650 Li-ion Battery When you plug the 18650 battery into the charger, it will show Red LED Light, and Green means in full charging condition Smart: Automatically stops when charging has completed Color: black Approx Weight: 75g