Massive 20,000 mAh Battery: Capable of multiple full phone charges or powering tablets and headlamps. Qi Wireless Charging Pad: Effortless wireless charging for compatible smartphones and earbuds. Triple Output Charging: USB, USB-C, and wireless options let you charge up to three devices at once. IPX4 Water-Resistance: Built to survive outdoor environments and minor weather exposure. LED Display or Indicator: Keep tabs on battery status in real time. Built for the Outdoors: Ideal for weekend camping trips, long hikes, and emergency go-bags. Model number: 21378 Battery Type / Chemistry: 2 x NV 1260110 (3.7V / 20000mAh)