This external battery is lightweight (around 180 g) and compact (around 11.8 x 7 x 1.7 cm), making it easy to carry when hiking or travelling. It has a capacity of 10,000 mAh, enough to charge a phone like the Fairphone 3 several times, as well as other small devices like a headlamp and a Garmin watch. It has two USB ports (USB-C and USB-A) with an output power of up to 20 W, compatible with fast charging and suitable for most USB devices. It also includes overcurrent and overheating protection to ensure safe charging. In short, it's just what you need to charge your phone, headlamp and watch when you're out and about.