Casio 18mm  rubber watch band BLACK   
F-105W F-91W F-94WA F-106W
Casio  original  watch band BLACK color
Buckle Black Plastic 
Band lug size 18mm & 22mm at watch case
Model fits 
F-28W  F-91W F-93W  F-94WA  FLB-91W
F-105W F-106W    

Fits:

F-105W
F-105W-1
F-105W-1A
F-105W-1AQ
F-105W-1AQY
F-105W-1AR
F-105W-1AUQ
F-105W-1AUZ
F-105W-1AZ
F-105W-1B
F-105W-1BQ
F-106W
F-106W-1
F-106W-1A
F-106W-1AQ
F-106W-1B
F-106W-1C
F-106W-1D
F-106W-1E
F-106W-1F
F-106W-1G
F-28W
F-28W-1
F-91W
F-91W-1
F-91W-3
F-91WG-9
F-91WM-1B
F-91WM-2A
F-91WM-3A
F-91WM-7A
F-91WM-9A
F-93W-1
F-94WA-8
F-94WA-9
FLB-91W-1
Lug Width/Band Width: 18mm/22mm