KangerTech KBOX (8-40w) - £39.99

Features and Specs:

• Dimensions: 3-1/2" x 1-5/8" x 3/4" to 1"

• 510 Threaded

• Minimum resistance: 0.4

• Adjustable wattage settings (8W, 13W, 20W, 25W, 30W, 35W or 40W)

• On/off - press the power button 5 times within 3 seconds to turn the device on or off

• Low voltage protection

• Low resistance protection - If the coil is less than 0.4ohm, the power light will flash 3 times and disable any output

• Short circuit protection - If a Short is detected, the power light will flash 3 times and disable any output

• Reverse battery protection

• Low battery warning

• 10 second cut off safety feature - If the power button is held for more than 10 seconds, the power light will flash 3 times and disable any output

• Lightweight

• Compact

• Twist-off tail cap