“World’s smallest” Bluetooth headset released A Bluetooth headset weighing less than 6 grams (.21 ounces) and measuring l.3 inches long and .63 inches wide was released by INVISIO, who claims that the G5 is the “world’s smallest Bluetooth headset.” The headset provides up to 4 hours of talk time and 150 hours of standby time and comes with a “Protective Charging case” that charges the headset each time it is placed in the case. When...