Dear Sir Madam, Usage:Personal product name:bluetooth panic button Function:Microcomputer control life:long service life generally set as:24-hour Emergency Zone Power supply:Button batteries 3V 240mAh Emission distance:100 meters (in open air) Full loaded battery work time:1 year Battery:High ca Show More...
Dear Sir Madam, Usage:Personal product name:bluetooth panic button Function:Microcomputer control life:long service life generally set as:24-hour Emergency Zone Power supply:Button batteries 3V 240mAh Emission distance:100 meters (in open air) Full loaded battery work time:1 year Battery:High capacity Battery 2:rechargeable Li-ion battery Funtion:steady performance