wholesale price hand held metal detector with factory price

Airport body Checking MD-300
1.alarm methods:light /voice/vibration
2.low battery indication
3.Senser sensitivity:8cm

                          Hand Held Metal Detector (MD-300)Specifications:

It features simple operation, exquisite design, convenient conservation and low failure rate.
Highly sensitive, it can easily detect pin-sized metal articles (or even smaller metal articles).
Its sensitivity can be adjusted according to the on-site requirements.
Indication of low battery voltage (LED light is always on).
It is praise worthy that its price/performance ratio is higher than other products of the same category. 
*There are two kinds of alarms, including sound & light and vibration. 
Features:
1, simple, convenient, easy to learn.
2, high sensitivity makes it easy to detect a metal objects of Daitouzhen size (or even less).
3, It can be adjusted according to the requirements of scenes.
4, It has indications when the battery voltage is low.
5, it is commendable that when the function achieves your requirement, the price has advantage.
6, It has a sound, light alarm, and vibration alarm.
7, It is the only metal detector detecting non-magnetic in China.
    It is the best choice for the industrial enterprises, electronic digital production enterprises, and gold processing.
Product parameters:
1, Dimensions: 395 mm long * 140mm
2, power: Standard alkaline batteries laminated 9 v
3, sealing performance: IP64
4, alarm mode: synchronized alarm of light and sound, vibration alarm.
5, weight: 260 g