The RapidBAND™ uses 125 kHz proximity technology.  The RapidBAND™ is made of strong silicone rubber.  It can be applied or removed with ease.  It is waterproof and will withstand the rigors of daily use.  Customization and additional colors are available, but require a longer lead time and a higher minimum order quantity.  Large Size is 8.5" (74mm).  Medium Size is "8" (65mm).  Small Size is "7.5" (54mm). 

This listing is for Indala 26 Bit technology.