It's not an Asus brand band. This is the band I bought.

This is the band: Truffol 22mm Metal Link Band for Samsung Gear S3 Frontier & Classic, Fitbit Blaze, Huawei Watch 2 Classic - Quick Release Stainless Steel Strap Wristband (Silver) https://www.amazon.com/dp/B01GRIN94W/ref=cm_sw_r_cp_apa_fq3ezbNFZGRER

I'll have to take it back to the jeweler if I ever want to change it, but I doubt I will. It's perfect.

Jeweler charged $50.

Edit a few days in: still great, but so fucking heavy.

Specifically: https://smile.amazon.com/dp/B01GRIN94W/

Couple other shots: http://i.imgur.com/SYWS1aG.jpg and http://i.imgur.com/GQem5j5.jpg