Support SW/FW：iOS14.5/iPhone SE iPhone6S & Above
Buzzer Spec：Φ20mm
BT distance：20-50m
Battery Size：120mAh / lithium ion polymer battery
Battery Standby Time：Approx 4~5months
Replaceable battery : NO
Location distance: No Limited
IP standard: IP68
Product size: 100*65*10mm
Product Weight:76g
