... each net weight 3) Present 1pc 9V battery for each MD-3003B1 Handheld Metal Detector MD-3003B1 ... , convenient to carry, light and good appearance, suitable for various metaldetection sites. Alarm / Vibration changing Button(Red Button ... centers, public organs, courts, stadiums, exhibition venues, entertainmentsites, station terminals.-Mining, electronics, hardware, jewelry, coinage etc. precious metals ...