Zhengzhou, where metal detectors do good quality handheld? [Zhengzhou] Hanson Radio Communications Tel: 18939564786 performance and features a simple operation, easy to carry 2, with charging function, charge time 4-6 hours (charger sold separately) 3, when the voltage is not enough, the light does not shine or until the alarm 4, light and sound vibration alarm prompted the dual mode 5, the first use of automatic reset switch to switch sensitivity, enabling large items that can be detected (excluding small items), but also can detect small metal Item 6, with adjustable sensitivity function 7, this section is the electronic factories, ** the police, security personnel, pipeline QC staff is currently the most used one. 8, this section is currently the world's most widely used in various fields a. Product parameters: 1, Dimensions: Length 415mm * 65mm * 40mm 2, Power supply: 6F22ND 9V battery (alkaline battery, rechargeable battery) 3, the sealing performance: IP64 4, Alarm mode: sound and light alarm simultaneously 5, Weight : 295g Zhengzhou Hanson Radio Communication Equipment Co., Ltd. Contact: Mr Zhu Tel: 18939564786 QQ: 1008619081 Address: Zhengzhou City, Shandong Bauhinia Street west 300 meters