The Nitecore TUBE has been updated to the TUBE V2.0, now with a maximum output of 55 lumens and a built in rechargeable battery providing up to 58 hours run-time on low output. The battery is charged using a micro USB cable (cable not included) that plugs into the micro USB charging port which is located underneath the dust cover on the left side of the light. Simply plug a able into the torch and connect to power, then the charging indicator will illuminate blue to show charging is in progress and will turn off once charging is complete after approximately 1 hour, 30 minutes. On high mode the TUBE V2.0 can project a 25 metre beam range and the 100° wide angle lighting provides excellent peripheral illumination. The single multi-stage switch accesses the 2 brightness levels, momentary on and the infinitely variable output mode. One press will access low, two quick presses will access high, or with the light off you can hold the button down to access momentary high mode which will turn off once the button is released. To use the variable brightness output, first turn the torch on in low mode and then hold the button down in quick succession. The light will go between 1 and 55 lumens and you can release the button when the light reaches your desired output. The tube also has a handy lockout mode so that you can prevent it being accidentally turned on. When the torch is on in any mode for more than 3 seconds, hold the button down until the light blinks once and then the torch will then be in lockout mode. To exit lockout mode simply hold the button down until the light comes back on. If the torch is plugged in to charge when in lockout mode, it will automatically be unlocked. The TUBE is an extremely lightweight and compact torch, which is perfect for attaching to a set of keys and with 9 colours to choose from the whole family can have one without any confusion as to who owns which.