... :fast flash+slow flash+constant +off( change mode by pressing the ON/OFF button)Power supply3 pcs of aaa battery(include ... no toolUsageSuit for bicycle light,emergency light, outdoor activities in the night, mountain-climbing light, baby car light ,skinning light ,warning ... customer's panton No. 6,Usage: light up in the dark when you ride a bike Pictures for your reference: silicone skull bicycle ...