... . can add LED as client need.5.Activated type:press/vibration/sound/magnetic6.Power by:AG10*3PCS/aa/aaa battery7.function ... pre-recorded or recordable with LED flash(optional)3.components:speaker,voice ic,battery,circuitry4.power supply:AG13,AG10,AG3 button ... battery5.speaker material:ABS(GREEN)6.speaker size:20mm-40mm7.sound formate:MP3,WAV8.switch:slip switch,push button,light,motion,vibration,timing ...