Renkforce led flashing sports armband for smartphones 28833c97 twnt ip5 renkforce 28833c97 p this sports armband has been designed for carrying a mobile phone on the arm for example during sport and leisure activities several integrated leds light flashing function switchable increase safety as other people or road users will be able to see you sooner especially at dusk or at night the armband is powered by batteries and suitable for all current smartphones like iphone4 iphone5 gal