BeGrit Mini Hand Held Coin Metal Detector Gold Digger Treasure Hunter with LED Indicator Light-weight and with a wrist strap, easy to carry around- LED Lights Alerts to the Detection of Metal Choose Between Sound or Vibration Alerts - Easy to use and portable Sensitivity Adjustable - increase or reduce the sensitivity (For short distance detection but not for small objects) Battery Required: 9V (Battery NOT included). Low battery alert Perfect for Security, Indoor/Outdoor Events - Perfect for the safety check and the detection of prohibited goods, electronic products, metal etc in the station, school, venue, factory