The item is a multifunctionalcar jump starter, which can be used to charge your car's battery and start the engine, even though the battery is totally dead. Unlike traditional bulky jump starter packs, it's small and light enough to carry around. Features -Material: Plastic Rubber -Size: 17.5X8.3X4.2cm;6.88X3.26X1.65in -With material, durable and professional. -The product design conforms to the ergonomic design and is easy to use -The fabric texture of the face shell feeling and anti-scratch surface. -Work for cars, motorcycles, yacht, snowmobiles etc -It adapts to most types of cars, so don't worry about its adaptability. Specification: Output current: 800 (A) Input voltage: 5 (V) Output voltage: 16.8 (V) Output power: 37 (W) Product certification: CE Scope of application: Car, mobile phone Power supply time: 120 (m) Starting current: 400A Peak current: 800A Input port: 5V2A/9V2A Outlet: Double USB 5V2A Capacity: 12000 mah Operating temperature range: -30-65C Suitable for most gasoline below 12v3.0L and diesel below 12v3.0L