Philips has just introduced the Sonicare DiamondClean USB, a toothbrush that can help you stay fresh and clean while you’re at your desk. The new electric toothbrush uses a USB port to keep its batteries charged, which is why the consumer electronics company has dubbed it “the iPod of toothbrushes.” Aside from USB connectivity, the device boasts five brushing modes and a “charge glass” for wireless charging. It’s slim design also makes it relatively easy to throw in a suitcase while traveling. Philips has also introduced a flossing device that doesn’t use floss at all. Sonicare AirFloss…