OMMO Metal Detector, Give You A Better Purchase Experience Q1. Great for beginners, but not most accurate. Yes, accurate can reach 8 inches, enough for beginners and develop children 's love of nature. Not suggested do some professional use. Q2. It cannot works/ detect anything. Try to press the PP button, if it has responses, please kindly check the connection cable, it might be connected incorrectly. Q3. Cannot connect the coil cord into the metal detector. Notice: Insert downward as indicated by the arrow Q4. Battery not durable The normal life of the 9v battery is 8 hours. Wear headphones for longer use, and suggested buying a rechargeable 9 v battery then avoid batteries waste. Q5. Why keeping make a sound? - Not suggested to test indoor, there are many things included metals so the detector will keep beeping. - Reduce the sensitivity and increase the height between the search coil and the ground. Not suggested used in highly mineralized areas. Q6 Add the function of backlight turn on/off The new batch has been improved, you can long-press the mode button to switch the backlight, turn off the backlight could to save power. If You Meet Any Problems Please write back us First, We Are Always Here to Help You. PINPOINT When you want to find a metal object,you can press the PINPOINT button to pinpoint the target. The stronger the target signal, the larger the detector indicating signal, the horn alarm sound will also be louder. It is more easy to help you to find the target object. But it depends on your environment,if there is a lot of metal thing in the underground you can reduce the pinpoint signal. Ergonomic Handle Design According to humanity design, we created the ergonomic handle, for energy-saving, less stressful and more comfortable when you handle the OMMO metal detector for detection. No Rechargeable,Battery Included It is no rechargeable, the indicator light on the LCD screen will turn red if in a low battery, remind you to change the battery. There are 2×9V Battery included when you purchased the detector. With Headphone If you found it's noisy when you hunt treasures, don't worry, the metal detector equipped with a headphone which allows you could concentrate on your detecting and never miss any effective indicate. A lovely Gift OMMO metal detector with full accessories and we equipped the color package box, you can send it for your kids, your husband & wife or anyfriend who like treasure hunting. Visible LCD Screen You can get the detecting information convenient and timely, and more clear for you to see the detection mode, sensitivity level, battery condition, and volume level. The new batch add the function of backlight turn on/off, you can long-press the mode button to switch the backlight, turn off the backlight could to save power.