This is a bracelet in the classic Japanese 花鎖 'Hana Gusari' style. The phrase means 'flower chain', and defines a type of chain pattern that came into use around the Nanboku-chō period (1334-1392) period of Japanese history. It was one of three styles of chainmail used in samurai armor. I cut and weave every ring myself, and the bracelet as pictured has approximate 500 rings in the weave. I custom size every piece I sell, just let me know the required size in the checkout comments and I will adjust it accordingly!
The clasp used in bracelet is a slide lock, it is very easy to put on and take off, and is very reliable and secure.