Watch sos alarm wireless with panic button dp-11a

Specifications Wrist Emergency button

wrist watch systle panic button

GSM wireless panic button

low cost panic button

remote panic butt

   Watch sos alarm wireless with panic button DP-11A     wrist watch systle panic button JA-02   Feature:   Can compatible with all our alarm host   Can be worn on the wrist like a watch   Permanently sealed-in lithium battery   Battery operated with life expectancy of >1 year in a typical domestic environment   Ultra low power consumption.   Choice of lanyard, black elastic wristband, or velcro wristband   Low battery detection       Technical parameter:   Power: lithium C1620   Battery life: >1 year   Radio frequency available: 315/433MHz   Range: 80 meters in open space   Operating temperature: -20 ~ + 50c   Humidity: up to 95% non-condensing   Dimensions: 43 x 31 x 12mm.