Sony Ericsson, world’s No 4 mobile phone maker, on Sunday, unveiled a cell phone that can be silenced by a wave of hand.

Sony Ericsson said a user can simply wave their hand over the phone to mute the ring tone and ignore a call on the Z555 flip cover phone, which will be available in the first quarter.

Alarm clock

Similarly a consumer using the phone as an alarm clock can activate the snooze function by waving across the phone. The company also announced two new phones for its Walkman music handset line-up including Walkman W760 music phone with satellite positioning technology that, combined with mapping software from Google, lets users follow step by step directions to their destination. It will be available from the second quarter, said Sony Ericsson.

The devices were expected to be shown at the Consumer Electronics Show, which opens to the public in Las Vegas on Monday. The company did not reveal retail pricing.