This cute collar light has a clever twisty secret, when the tag is turned \'off\', it forms a heart shape, but then when you want it to light up, simply twist the heart and it forms an \'oval\' shape that illuminates! When you want to charge the light, give it a half twist, to reveal the Micro USB socket. The pendant is quite chunky, so is suitable for hairy dogs, being 2cm thick it should still be visible on most dogs. A great tag for elderly dog owners or people with poor dexterity, as the twist on and off method is easier to do than fiddly switches or buttons. Find Your Dog Easier in the DarkWater ResistantTwist to ActivateMicro USB Cable IncludedHeart 4.5cm x 4.5cm x 2cmOval 6cm x 3.9cm x 2cm