GM-S2100 is one of the smallest G-Shocks and Casio markets the series as unisex or women's. But in the wider world of wristwatches, its dimensions fall on the sweet spot for men's
Casio Women's Gmas120mf-2a2 G-shock 40mm Pink Dial Resin Watch for sale online | eBay
G-Shock GM5600SN-1 digital 40mm - ShopStyle Watches
Casio G-SHOCK 40th Anniversary Flare Red GWG-2040FR-1AER,... for $1,261 for sale from a Trusted Seller on Chrono24