... color changing for choice3.Power by: CR2032.CE2050 or other button cell battery4.Lifetime:can flash for more than 5000 times ... more.5.Flashing way:as you require6.Activated by: press button, vibration, motion sensor, PIR sensor ,shake sensor etc.7 ... , speaker and battery7. Sound formate: MP3,WAV8. Switch Option: Pull-tab switch, push button, light,motion, vibration activated the sound9. Battery: 2-4pcs ...