DDQ LED Light Armband Safely Walking and Running Flashing Wristband -Blue Armband can be use on your wrist/ankle/arm or pet collars. 60-80 hours, normal 2-3 months; battery can be replaced. Size: 28cm-32cm (can be cunstomize as your need) Width: 2.5CM The item have three modes:1.Steady On 2.fast flash 3.normal flash Colors: red,orange,yellow,blue,green,pink (Six kinds color for you chose)