Add Tech has announced a tiny Bluetooth headset AD-HSM10. The company says this is the world smallest and lightest headset. If it’s not so (a number of such solutions is already on the market), the AD-HSM10 belongs to the most compact class. Measuring 23×22x31.5 mm it weighs 5 g. It ensures up to 100 hours standby and up to 3 hours of talk time. The device is available in Titan and silver colors. The AD-HSM10 will come out in Japan late in January 2008 with the price tag of 8980 Yen (about $78).