This metal detector is portable and can be used for science education. It is also a plaything that children can use to stimulate and exercise intelligence.

Features:
High sensitivity, can be used for science education.
Easy and simple to operate, lightweight and portable.
Detection distance keeps steady when 9V battery is used up to 7V.
Save power. Alkaline battery can work over 45 hours.
Sound alarms when turn on or turn off device.
LCD information screen gives you an easy to see and easy to understand information center that shows you what the metal detector is doing.

Specification:
Material: plastic+metal
Color: blue+black
Power supply: 1 * 9V, 6F22, battery (not included)
Frequency: 30KHz
Standby current: 30mA
Maximum current: 70mA
Voltage: 9V
Detection distance:
Iron nail: 30-60mm / 1.2-2.4in
Sensitivity: One coin: 70mm / 2.8in
Indication mode: sound mode, LCD mode
Stretch length: 840mm / 33.1in
Contraction length: 670mm / 26.4in
Detector diameter: 165mm / 6.5in
Item weight: 435g / 1.0lb
Package size: 650 * 170 * 70mm / 25.6 * 6.7 * 2.8in
Package weight: 705g / 1.6lb

Note:
Do turn off switch when not in use.
Take out batteries if not in use for long period.
Device sounds only when move above a metal, it does not sound when point to metal immovably.

Package List:
1 * Metal Detector
1 * English User Manual