This external battery is lightweight (180 g) and compact (118 x 70 x 17 mm), with a capacity of 10,000 mAh and a maximum output power of 15 W, making it suitable for charging a phone, headlamp and Garmin watch when hiking or travelling. It has an integrated USB-C cable and two ports (USB-C and USB-A), so you can charge several devices simultaneously, which is handy when you're on the move. Its capacity and portability make it ideal for mobile use with devices such as the Fairphone 3, a headlamp and a Garmin watch.