... sound recorder digital voice recorder, mini voice recorder,Audio Monitor ,Mini Voice Monitor ,Voice Monitor ,Mini ... surveillance, vehicle anti-theft tracking, child custody, evidence collection, etc. Working frequency: 900MHz, 1800MHz, 1900MHzSpecificationPrimary function: ... 32*18mmWeight: 25gColor: black Accessories1×GSM Sim Audio Surveillance1×Charge cable1×User manual Contact:Ashleyluo Developed ...