Features: Copper core enables this lithium battery charger adapter to work for a very long time. 21V/1A helps achieve a fast charging. Made of fire-proof PC engineering plastic alloy, which makes it heat-resistant. Multi-level protections of over voltage protection, short-circuit protection, over current protection and so on make sure a safe charging. Adopting 100-240V wide voltage to make it suitable for different areas. Specification:Product type: Lithium Battery Charger AdapterMaterial: ABSInput voltage: 100-240V 50HZ/60HZPort: 5.5 x 2.5mmOutput current: 21V/1APlug: US plug, EU plug for your choicePackage size: approx. 7.4 x 4.1 x 5.3 cm/ 2.9 x 1.6 x 2.1 inPackage weight: 66g/ 2.3ozPackage List:1 x Lithium Battery Charger Adapter Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.