For Casio Protrek Series Prw-3000\3100\6000\6100y Mountaineering Silicone Watch Band Water Proof Outdoor Sports Men Accessories - Watchbands - AliExpress
Casio Protrek Prw-3100-1jf Slim Line Multi-band 6 Triple Sensor Men's Watch Gray for sale online | eBay
Casio Pro Trek PRW-3100-6ER for $355 for sale from a Private Seller on Chrono24