1.Handle handset shell using a special PC / ABS plastic; 
2.The surface of handle handset is made of matte surface, the back of handset grommet is made of 304 stainless steel,look beautiful, durable, feel comfortable. 
3.Split structure(made of up-and-down handle handset), sealing, flame retardant. Withstand the percussion is not broken, twisted pull no distortion, no burst at minus 40 degrees. 
4.Metal armoured cord use imported 304 stainless steel, has a strong tensile strength.
5.Built-in high strength tensile steel cables, handle tensile strength ≥250Kg. (Spring wire optional) 
6.Use anti-puncture, hifi transmitter and receiver to ensure the transmission characteristics matching the phone call, in line with requirements of 4.2 GB / T15279-2002's.