The Red Ferret Journal

This Spooklight wireless turn signal and brake light for bicycles is pretty ingenious as well as useful. It works by using an accelerometer to sense your braking and with a touch panel for the turns. You recharge the thing through your computer’s USB port (you do have a computer, right?) and it will even top up your mobile phone or MP3 player in emergencies. Nice touch. £59.95.

 There’s no need for batteries as its built-in Lithium polymer battery recharges through your computer’s USB port. Spooklight also works as a power bank that will top up your phone or mp3 player (and many other gadgets) out on the road. I tried it on an iPod Nano this morning and it worked beautifully. The whole kit weighs in at a featherweight 90g (3 oz).