Color: Black - Material: Plastic + metal - Compatible with 18650 / 16340 / 14500 and 10440 battery - Charging battery quantity: 4pcs - 2-round-pin plug - Input voltage: 100~240V - Output voltage: 4.2V - Output current: 800~1000mA - Cable length: 120cm - USB output ability up to 5V 1A~2.5A - Built-in Auto cut off device - Built-in Timer protection - Can choose to charge and discharge suitable for different capacity batteries - When charging slide the switch to "Charge" the red light flashing shows that the normal battery charging - When discharge slide the switch to "USB O/P" - Four independent charge channels may charge different type batteries at the same time - Comes with Chinese/English user manual