Commodity : led emotion sign
Features
1：LED Emoticon to communicate to fellow road users.
2：Five buttons on a mini control unit to be kept near your fingertips.
3：Each button corresponds to one of five messages to other drivers.
4:Messages include 'Back Off' for those riding a bit too close for comfort, 'Thanks' for putting a smile on the nice man who let you out's face, 'Sorry' for the dodgy moves, a smiley face or a winking face so your mood at good manoeuvres and attractive passers by can be illustrated. 
5:Sucker for attaching it to your rear windscreen.
6:Always drive with due care and attention to other road users as well as pedestrians.
7:Suitable for ages 17 years+.
8:Requires 4 x AA Batteries and 2 x AAA Batteries (not included).
9:Size: 17 x 17 x 4cm.