The top of the line! Helix Bluetooth has a rechargeable battery and allows full control from your smartphone or tablet via bluetooth, no wifi or cell signal required. Forgot the lantern on the table outside and already zipped up your sleeping bag? Want to shed some light when something goes bump in the night? There's even a sleep timer feature to ensure your lantern turns off once you're catching some shuteye. For those who enjoy some technology, the Helix Bluetooth has all the bells and whistles. The application available for both iOS and Android, offers full control of up to eight Helix Bluetooth lanterns so tell your friends to bring theirs along.