Features 1,Imported low temperature IC and the latest circuit design to achieve the most complete functionality with the smallest size 2,Advanced push and pull button design, the one-button operation can realize the conversion between sound and light and mute or vibration operation 3,Humanized push-pull battery cover design makes it easy for customers to replace the battery without any tools. 4,Eco-friendly and with fire retardant materials, moisture-proof and dust-proof design 5,Can simultaneously detect magnetic and non-magnetic metal, and with excellent detection sensitivity on copper and aluminum materials too. Specification Features: Imported low temperature IC and the latest circuit design to achieve the most complete functionality with the smallest size Advanced push and pull button design, the one-button operation can realize the conversion between sound and light and mute or vibration operation The 9V battery is reduced to about 7V, with constant detection distance and power saving, which can be used for more than 20 hours continuously Humanized push-pull battery cover design makes it easy for customers to replace the battery without any tools. Eco-friendly and with fire retardant materials, moisture-proof and dust-proof design Can simultaneously detect magnetic and non-magnetic metal, and with excellent detection sensitivity on copper and aluminum materials too. Three indication by light: power normally on (green), alarm light (red), battery power is in undervoltage state (yellow). With charging port, plug and charge, convenience charge at any time Specification: Voltage: 7-9 v Power : 270mW Operating frequency: 22 KHZ Working current: <50 mA Operating temperature: -5 to 55 ℃ Power supply:1x 9V laminated battery (not included) The highest sensitivity: x General phone: 20 cm x Small tools: 15 cm x One-dollar coins: 10 cm Size: 38x7.8x3cm or 15x3.1x1.2in Weight: Approx.286g or 10.1oz Package list: 1 x Hand-Held Metal Detector (battery not included) Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.