Features:

• It features simple operation, exquisite design, and convenient conservation
• Low failure rate, can detect ferrous metal and non-ferrous metal
• High sensitivity, can easily detect pin-sized metal articles
• Indication of low battery voltage: gives continual sound alarm or vibration
• Alarm: sound and light alarm simultaneously, or vibration and light alarm
• Adopt cycle-switch to switch sound alarm to hidden vibration alarm respectively

Technical specifications:

• Operating frequency: 20 KHz
• Unit Weight: 272g (including the battery)
• Handle Dimension: 30 X30mm
• Unit Dimension: 440(L) X 55(W) X 145(H) mm
• Sensitivity Adjustable: manual
• Indicator: BZ, vibration motor
• Battery: a 9v battery  
• Operating Temperature: -5°Cto +55°C
• Control: Circulation switch (ON, OFF, sound & light alarm or vibration)