Samsung Galaxy Watch 4 Classic 46mm Steel Iron Strap (Black)
Tasikar No Gap Straps Compatible with Samsung Galaxy Watch 6/5/4 Strap 40mm 44mm/Watch 6 Classic 43mm 47mm/Watch 5 Pro/Watch 4 Classic, 20mm Soft Silicone Sport Band for Women Men, Orange Grey :
The best Samsung Galaxy Watch 4 bands - Android Authority
Bling Silicone Strap for Samsung Watch 4, Active 2 40mm 44mm, Galaxy Watch 3 41mm, Galaxy Watch 42mm, 20mm Sport Strap With Quick Release - Etsy UK