Listings show common widths of 18 mm, 20 mm, and 22 mm.
The listings show bands made from silicone, leather, and nylon.
These are adjustable quick-release bands: you slide the quick-release bar to detach the band, then pop on a different band to swap it.
Most listings state a 1-year limited warranty.
No — the listings specify 'Battery: No Battery Used,' so the bands do not require a battery.
Color options shown include Black, Ivory, Tan, Citron, and White. Hardware finishes listed include Slate, Soft Gold, Cream Gold, Silver, Rose Gold, and Black. (One title in the results contains a misspelling — 'Wardware' — which should read 'hardware'.)