Keep safe in low light with our lightweight LED Slap Band. A simple tap on the arm, wrist or ankle and the band will comfortably curl round. Perfect for all seasons with its weatherproof design and 72 Hours battery life to keep up with your fitness regime. A luminous red light with either a continuous or flash mode to keep you visible. Lightweight & comfortable. One size fits all. Easy battery replacement. Water resistant. Fits on arm or ankle. Each arm slap band requires 1x cr2032 battery. (batteries included). Size H34cm, W3cm, D1cm. Fully assembled.