Description: *Durable design: Stainless steel body, molded rubber
shell. Silicone gel filling and epoxy resin protect the internal
electronics against shocks. *Completely waterproof: Sealed against
liquids, works under water. *Automatic card reading: Detects and
reads signal cards without button pressing, making the unit easy to
use. Specification: *Memory Capacity: 28,671 records *Energy usage
during stand-by: 0.06mA *Battery Life: over one year with a single
battery average 200 readings per day *Reading distance: 5cm to 10cm
*PC Connections: wireless connection *Operating Temperature: -20C
to 70 *Operating Humidity: 0% to 95% *Size: 120 x 35 x 26mm
*Weight: 200g *Battery: 3.6V lithium battery