--- product_id: 493668812 title: "PRG-340-3ER Mens Wristwatch With Alarm" brand: "casio" price: "¥85039" currency: JPY in_stock: true reviews_count: 7 url: https://www.desertcart.jp/products/493668812-prg-340-3er-mens-wristwatch-with-alarm store_origin: JP region: Japan --- # Eco-friendly biomass plastic build Enhanced compass with duplex LCD Solar-powered for endless energy PRG-340-3ER Mens Wristwatch With Alarm **Brand:** casio **Price:** ¥85039 **Availability:** ✅ In Stock ## Summary > 🌿 Navigate your world sustainably and stylishly with Casio PRO TREK! ## Quick Answers - **What is this?** PRG-340-3ER Mens Wristwatch With Alarm by casio - **How much does it cost?** ¥85039 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/493668812-prg-340-3er-mens-wristwatch-with-alarm) ## Best For - casio enthusiasts ## Why This Product - Trusted casio brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Next-Level Navigation:** Duplex LCD with enlarged compass display and rotating bezel for precise, effortless orientation in the wild. - • **Solar-Powered Freedom:** Tough Solar charging system ensures your watch stays powered on every expedition—no battery swaps needed. - • **Comfort Meets Function:** Lightweight resin case and urethane band deliver all-day comfort without compromising toughness. - • **Mineral Crystal Durability:** Scratch-resistant mineral crystal protects your watch face during all your outdoor exploits. - • **Eco-Conscious Adventure Ready:** Crafted with biomass plastics from castor oil and corn, blending sustainability with rugged durability. ## Overview The Casio PRG-340-3ER is a solar-powered men's wristwatch designed for outdoor enthusiasts, featuring eco-friendly biomass plastics, a large duplex LCD compass display, a rotating bezel for easy navigation, and a durable mineral crystal face—all built to combine sustainability with high-performance functionality. ## Description Get out into the great outdoors with a solar-powered PRO TREK featuring eco-friendly materials that care for the environment. The PRO TREK line of authentic outdoor gear for nature lovers introduces the PRG-340, a timepiece that incorporates environmentally friendly biomass plastics* while delivering the same comfortable fit for your wrist. The case and urethane band are crafted from biomass plastics made with castor oil and the band from biomass plastics made with corn. The duplex LCD lays out separate layers for the compass graphics and the clock functions, enabling a larger compass display for better legibility and easier navigation in a design that is both functional and beautiful. The rotating bezel makes it simple to record compass readings, and the Tough Solar charging system keeps the advanced functionality on the go. Get out and explore with a gentler footprint! * Biomass plastics are polymers produced using chemical or biological synthesis of materials sourced from plant matter or other renewable ## Features - Case - - Case Material: Resine - - Case Shape: Round - - Case Colour: Green - - Crystal: Mineral crystal ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0BFJ96MG4 | | Batteries | 1 Lithium Metal batteries required. (included) | | Best Sellers Rank | 4,686 in Men's Wrist Watches | | Date First Available | 17 Sept. 2022 | | Department | Men's | | Is Discontinued By Manufacturer | No | | Item Model Number | a | | Manufacturer | Casio | ## Images ![PRG-340-3ER Mens Wristwatch With Alarm - Image 1](https://m.media-amazon.com/images/I/71DCI5ykg6L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ A replacement for a 35 year old Solar Protrek *by on Reviewed in the United Kingdom 9 June 2026* Replaced my Protrek watch after 35years and breaking the case in a fall. This watch is the best replacement l could wish for all the functions at a decent price lets hope this lasts as long. ### ⭐⭐⭐⭐⭐ Casio pro trek *by on Reviewed in the United Kingdom 9 May 2023* Nice watch with big display.Watch was lighter than I thought it would be but overall great product . The only problem i would say is the price don’t think it’s worth £210 more like £130 max ### ⭐⭐⭐⭐⭐ Prodotto ottimo, buon rapporto qualità/prezzo *by on Reviewed in Italy 14 February 2026* Prodotto di qualità, leggero, resistente e affidabile; le misurazioni sono precise e molto leggibili. L'ho acquistato da diversi mesi e mi trovo sempre bene. ## Frequently Bought Together - Casio Pro-trek Watch One Size - Citizen Men Analog Analogue Watch with Polyurethane Strap BN0230-04E --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.jp/products/493668812-prg-340-3er-mens-wristwatch-with-alarm](https://www.desertcart.jp/products/493668812-prg-340-3er-mens-wristwatch-with-alarm) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-28*