Nixon has announced the spring release of the Rock LTD Collection, a limited edition capsule of one-of-a-kind timepieces designed with donated leather jackets, pants, and guitar straps from some of the world’s largest names in music and sports including Slash (Guns and Roses), James Hetfield (Metallica), Eminem, Tony Hawk, Jared Leto, Chris Martin, Macklemore, and more. Each watch is individually, hand-numbered to denote its rarity.

A portion of the proceeeds from the sales of the watches will go to benefit the MusiCares MAP Fund, a charity that provides members of the music community access to addiction recovery treatment.

The collection will be made available globally on April 26 and can be purchased at select global retailers.