Touch call button. All you have to do is place a finger to send 
a signal to the 433-CMU40/60 central unit (NOT INCLUDED) 
or the 433-EC economic monitor (NOT INCLUDED). The 433-TB 
can be worn as a pendant or as a bracelet. 

Maximum range of 300' 
Pendant strap included 
Soft silicone strap 
90 day warranty