Features: 100%BrandNew!Qualityisguaranteed. Smallcompactsize. Basedonthenewestbluetooth4.0version Canchainuser'seasy-lost!#!amp!*!valuablebelongings(suchaskeysandhandbags)kidsorpetstogetherwithsmartphonesthroughspecifiedappsoftwarewithinasettingbluetoothdistance Intheeffectivedistanceitcanrealizethefunctionsof: anti-lost lookingforsmartphones self-pcrtrait voicerecording Specifications: Color:blackwhitegreenbluered Size:3.7*3.7cm PackageIncludes: 1xsmartfinder