A new electric toothbrush that uses a USB port to charge its batteries has been launched by Philips. The 250 gadget, which the company claims has been called 'the iPod of toothbrushes, comes with a rigid plastic travel case that then charges the toothbrush via a USB port. The toothbrushs standard charger is an adaptor for traditional bathroom sockets so that the USB cable can be plugged in. Philips claims that the 'Sonicare DiamondClean is its 'most advanced brush yet, with five brushing modes and a 'charge glass for wireless charging. Previous models have used plastic chargers that users have struggled to keep clean. TG