Specifications:

MD4030
Color: Black
Material: ABS Plastic + Aluminum 
Sensitivity: Min. 130mm / 5.12" (Test Coin: US Φ 25)
Detect Objects: Metal(Iron nail, iron covering, aluminum ring, small aluminum product, coins, gold, bronze, silver)
Detection Mode: All Metal, Discrimination 
Operating Frequency: 5KHZ 
Power Supply: 2 x 6F22 9V Batteries (Not Included)
Operating Current: Standby 10mA(LCD with backlit color 80mA)
                               Max 70mA(LCD with backlit color 150mA)
Operating Voltage Range: 9V
Detection Indication: Mechanical Pointer Mode, Audio Mode
Control: Power Switch
Sensitivity: Adjustable 
Detection Depth: 10-30cm / 3.94-11.81inch
Volume: Adjustable
Adjustable Height of Detector: 78-107cm / 30.71-42.12inch
Application: Testing metal foreign body of raw materials, fuel and food, Detection of underground pipeline & line, Archaeology, Exploration, Found buried treasures of gold, silver and metal artifacts, The acquisition of scrap metal industry, Customs and safety inspection, Police department detective search, Detection of interpol search, Checking metal foreign bodies in express delivery and luggage. 
Operating Temperature: -15~45℃ / 5~113℉ 
Storage Temperature: -20~60℃ / -4~140℉ 
Item Size: 107 * 27 * 16.5cm / 42.12 * 10.63 * 6.50in
Item Weight: 862g / 1.90 lb
Package Size: 54 * 22 * 11cm / 21.26 * 8.66 * 4.33in
Package Weight: 1.28kg / 2.83 lb