echnique Data: Up To Standard Hand held metal detector passed the ministry of public security inspection report. The product has a registered trademark. Products have related appearance patents and utility model patents; which does not involve the use of intellectual property disputes. Of cardiac pacemaker wearer or other support system, pregnant women and soft dish, the magnetic medium tapes, video tapes are harmless. The product conforms to the "GB15210-2003". Alarm Pattern LED lights chirp alarm or vibration alarm. 1.Alarm indicates three modes: Continuous red LED: target is detected Long bright green LED: boot Red LED flashing: low voltage indicator 2. Three types of alarm signal model number: Headphones sound, buzzer and vibration, etc. 3. Reset time: Automatic reset with 0.5 seconds left Hours of Use Save electricity and can work continuously more than 40 hours Weak current remind There is automatic successive sound or vibration alarm and LED bright red when battery runs out. Sensitivity Adjustment There are two sensitivities to select high and low, suitable for different occasions. Detection Range 1. Clip 10 to 15mm 2. Model 64 pistol 150mm 3. Six inches dagger 160mm 4. 20 mm diameter steel ball 50—70mm Battery Charge Charger, rechargeable battery can be configured working power supply Standard 9 v alkaline battery 25 hz boundary dimension 410mm(L)×85mm(W)×45mm(H) Alarm Sound ?75dB(A) enclosure protection class IP31 total weight Net weight 360g Operation temperature: -20?- +45? Attention Note: 1.Don’t forget to turn off the power after using. 2.Remove the battery if you don’t use it in a long time. 3. Probe will rise when it swept the metal objects. 4. When charging, please turn off the power switch (8). Preventive maintenance: When don't use metal detector, switch should be placed in the "OFF", and keep the metal detector looks clean and dry. In order to maintain its appearance neat, you can use wet cloth to scrub, but do not use chemical detergent to clean. Don't use metal detector for a long period of time, remove the battery from the battery compartment.