Not so much a glaring omission in the Apple Watch, but in the accessories - the charger looks like such a chunky piece of metal. You have to take off your watch to snap it onto it to charge. It's a shame it's not a thin disc that you could slide between the back of your Watch and your wrist, if you just had to wear it to bed, or going to be sitting at your desk for a few hours. Granted, you'll be wired up like a hospital patient, but at least your battery will always be topped off.