Here we go – another claim of a product that is the world’s smallest. In this instance, Nextlink has unveiled the world’s smallest Bluetooth headset, the Invisio G5. It’s not actually invisible, but it certainly is small. It measures in at just 3.3 cm long and 1.6 cm wide. It has a Soft Spring for comfort, and somehow a three button interface is packed into the tiny frame. The battery life is surprisingly stout for such a small package, too – four hours of talk time and 150 hours of standby. It also comes with a Protective Charging Case, which, shockingly, protects and charges. That makes the headset bigger, but offers 20 hours of talk time and 30 days of standby, so it might be worth the trade-off. It looks, for now at least, that only Europeans will be able to access this tiny device. If you live in Europe and you want one you’ll need 110 euros, or about $165.