The Apple Watch may be the most popular smartwatch on the market, but it does not have days of battery life. If you plan to spend a lot of time with your Apple Watch on the road, you may want to get a decent battery extender for it. JOOSTCUBE could be just what you need. It is a compact device with a 1500 mAh battery to charge your smartwatch for up to 5 times.
JOOSTCUBE does not require you to deal with any cables. It is compact enough to fit in your pocket (35 x 35 x 30 mm). It has an anti-slip base and a shock-resistant design. The developers are making it available in various colors. More information is available on Indiegogo.