Blinks When You Have a Call

If you happen to be venturing somewhere noisy or somewhere very quiet, it's likely that you won't hear your cell phone ring. That's just the way it goes these days - there are plenty of places where ringing phones just aren't welcome. These light charms, from UK designer Mathmos, are the ideal accessory for anyone who wants to be alerted to their cell phone ringing without having to keep an eye on it all the time. The light charm senses when a call is being received and flashes to let you know.

They are available in two different styles that any geek will appreciate - mini lava lamp shape (the universal symbol of relaxed retro) and the light bulb (the international symbol of innovation and invention). The lava lamp (Astro) comes in Blue or Red and the bulb in Blue or White.

• Weight: 15g
• Dimensions: Bulb (height 30mm x overall dia. 13mm), Astro (height 30mm x overall dia. 12mm)
• Light charms effect is created by LEDs and is powered by 3 x SR60 batteries (batteries included)
• Made from crystal and metal
• Only for use with 1800/1900 MHZ GSM mobile phones