Cleanroom PU ESD disposable Wrist Strap 

Anti-Static Cordless Wrist Strap is also called Anti-Static Wireless Wrist Strap, how does a cordless wrist strap work? It follows corona and point discharge. Charge building up discharges when it reaches a limit to eliminate electrostatic. In the inside of the antistatic cordless wrist strap has a little metal button that touches your skin and is attached by wire to, the other end, which clips to ground, and the static is drained off from the button, through the wire, across the clip and into the ground. A piece of copper wire wrapped around your wrist and clipped to ground would do the same thing. In other words there is no such thing as a cordless static discharge strap.

How does an anti static wrist strap work?
Skin contacts with conductive material on the wrist strap. Static charges building up on body are discharged to the earth through the earth system.

Specification:

1) Material: polyester, nature rubber, conductive fiber blend
2) Wire diameter: 2.2MM
3) Coil cord length: 2.5M
4) Snap: 4MM/7MM/10MM
5) Resistance: 10^12 Ω(Ext.) 10^5Ω(Int.)
6) Colors: light blue, purple, green, yellow, red and black
7) Plastic parts: ABS; Stud: copper with chrome plated; Back
material: ABS, non-allergic ABS
8) Customization is available.