The Nitecore NB Air is an ultra-lightweight, portable power bank with a 5,000mAh capacity, designed to keep your devices charged on the go. Encased in a sleek carbon fiber frame, it’s smaller and thinner than a phone while weighing just 3.14 oz, making it the perfect backup charger for daily carry, road trips, hiking, camping, or emergency kits. Fast USB-C Charging & Low-Current Compatibility The NB Air features a USB-C port supporting up to 18W max input and output for fast, efficient charging. It automatically detects and safely charges low-current devices such as wireless headphones, smartwatches, and fitness trackers. Press the power button to check remaining capacity via the four blue LED indicators. Built Tough & Ready to Travel Its rounded corners help absorb impacts, and the seamless design provides an IPX7 waterproof rating for protection against rain, splashes, and humidity. Airline-approved and extremely portable, the NB Air is your reliable companion for travel, off-grid adventures, or daily use. Specifications Capacity: 5,000mAh 3.88V (19.4Wh) Rated Energy: 3,300mAh 5V (TYP 2.4A) Input (USB-C): 5V~2.4A / 9V~2A (18W MAX) Output (USB-C): 5V~2.4A / 9V~2A / 12V~1.5A (18W MAX) Dimensions: L 4.41″ x W 1.89″ x H 0.38″ Weight: 3.14 oz IP Rating: IPX7