With tzumi's 4,000 mAh PocketJuice Portable Charger you can take all of your smart devices and other electronics on the go and keep them fully charged all day long. Despite being super-slim and extremely lightweight, this external battery power bank has a high enough capacity to charge gear multiple times over and will fit in small bags and pockets with ease. - Pre-Charged Rechargeable Lithium-Polymer Battery- Single USB Charging Slot- 5 Volt/1 Amp Input- 2.4 Amp Output- LED Status Lights- UV-Resistant Protective Shell- Up to 1.5 Smartphone Charges - Weight: 4.4 Ounces- Dimensions: 4.4" x 2.4" x 0.62"tzumi's PocketJuice Portable Charger is one of the fastest phone and tablet chargers on the market. It comes pre-charged and is built with a powerful military-grade high-performance rechargeable lithium-polymer battery, which charges compatible devices quickly and efficiently to keep them fully charged and performing their best.We have engineered our portable chargers with a protective casing that keeps the internal components safe and performing at their best for a fast, durable, and streamlined charging experience that you can always rely on. Each PocketJuice model is equipped with QuickChip technology, which regulates the power levels to ensure protection from over-charging and overheating, which can cause long-term damage to your device. Additionally, you can quickly and efficiently read your battery level through the 4 LED indicators for added peace of mind. Wherever you go, PocketJuice has you covered.