Anti-Static ESD Safe Discharge Wrist Strap

Static electricity that a person cannot even feel - as little as a few hundred volts - is enough to silently damage a microcontroller pin or a sensitive IC, which is exactly the failure mode this strap prevents by continuously bleeding static charge away before it can discharge through a component. The elastic band's conductive fibres stay in contact with skin, while a 1M-ohm resistor in the ground line limits current to a safe level even if the strap accidentally contacts a live circuit.

A 180cm cable gives enough reach to work comfortably at a bench while still clipped to a proper ground point, and the stainless steel clasp keeps a reliable connection through repeated use rather than loosening over time.

Standard practice whenever handling bare ICs, populated PCBs, or any board with exposed sensitive components - soldering, repair work, and assembling boards where a static discharge could take out a part that then fails mysteriously days later.