Handheld Detector Wand GPS Signal Detection Super Long Standby Time Handheld Security Wand for Security Personnel S699 Item Type: Handheld Detector Material: Plastic, Electronics Frequency Range: 1‑8000MHZ Detection Dynamic Range: Greater Than Or Equal to 73DB Detection Sensitivity: Less Than Or Equal to 0.03mv ( Main Frequency Band) Detection Range: 2.4G: 10 Square Meters ( Standard 10mw) 1.2G:15 Square Meters ( Standard 10mw) Cell Phone Frequency Band 2G 3G 4G Signal: 15 Square Meters Continuous Working Time: 8‑10 Hours Battery Type: Built in 500mAh Lithium Battery ( Included) Suitable for People: People who often use bank transfers, people who often go to public entertainment venues, people who often go to various shopping malls to try on, people who respect personal privacy and the privacy of others, people who are in contact with the custody of commercial secrets, security personnel of commercial secrets and technical secrets places, anti snooping and anti eavesdropping professionals