This device is a high performance Hand Held Metal Detector designed to meet the exact requirements of the security industry. Typical uses will include body search for offensive weapons in crowd control, airport and border security, checking parcels and letters for metal objects and anywhere that hidden metal needs to be detected.
IP 54 rated - Good for use outdoors or indoors.
High or Low Sensitivity Settings: A pen knife will be detected at 4 inches at low, and 6 inches at High.
Very High Detection Ability: Detection of USD 25 cent piece at 45mm

Specifications:

• Highly sensitivity. 
• Simple and convenient to use, no adjustment is required. 
• The detection distance will not be changed when the battery voltage drops from 9V to about 7V. 
• Low power consumption, can work for 40 hours continuously. 
• There is automatic and continuous alarm when the battery is used up. 
• Switch on/off audio prompt function. 
• With external rechargeable socket hole. 
• Has audio, Light and vibration handoff switch. 
• Detection Indicator: 
• Visual = Red/Green LED 
• Sound + Vibration 
• Control: On/Off; Low/Normal Sensitivity 
• Operating Frequency: 93KHz 
• Power Source: 1x 9V Battery 
• Dimensions: 420mm x 85mm x 42mm (L x W x D) 

Package Details:

1. 1 x Hand-held metal detector with Holster
2. 1 x 9V alkaline battery
3. 1 x English User Manual