... and compact design Customized sounds Good sound effects l Applied for: greeting cards, gift package, novelty toys, promotional gifts, etc ... , voice, light, vibration, temperature, infrared or timingl Function: used for recording your own voice and play back, with LED flash ... , LED indicator, batteries, wire harness, switch, more or less for different itemsl Power: 3 x AG10 button cellsl OEM/ODM ...