WiWU Wi-M23 Portable Apple Watch Charger — Magnetic Puck with USB-C + Lightning Dual InputThe Apple Watch Charger You Forgot You Needed. Here's the thing about Apple Watch chargers: you only realize you need a backup at the worst possible moment at 11 PM in a hotel room, at the gym before a workout, two hours into a road trip when the battery hits 5%. The WiWU Wi M23 is the smartest backup you can carry. It's the size of a coin, it loops onto your keys, and unlike every other portable Apple Watch charger out there it works from both USB C