--- product_id: 390453835 title: "Samsung Galaxy Watch4 Aluminum Smartwatch 40mm LTE - Silver (Renewed)" brand: "samsung" price: "¥311" currency: JPY in_stock: false url: https://www.desertcart.jp/products/390453835-samsung-galaxy-watch4-aluminum-smartwatch-40mm-lte-silver-renewed store_origin: JP region: Japan --- # 50m Water Resistant 1.2" AMOLED Display ECG & Blood Pressure Monitor Samsung Galaxy Watch4 Aluminum Smartwatch 40mm LTE - Silver (Renewed) **Brand:** samsung **Price:** ¥311 **Availability:** ❌ Out of Stock ## Summary > ⌚ Elevate Your Everyday with the Galaxy Watch 4! ## Quick Answers - **What is this?** Samsung Galaxy Watch4 Aluminum Smartwatch 40mm LTE - Silver (Renewed) by samsung - **How much does it cost?** ¥311 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/390453835-samsung-galaxy-watch4-aluminum-smartwatch-40mm-lte-silver-renewed) ## Best For - samsung enthusiasts ## Why This Product - Trusted samsung brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rugged & Ready:** MIL-STD-810G compliant and 50m water-resistant for your adventurous lifestyle. - • **Stylish Versatility:** Compatible with standard 20mm straps for a look that suits every occasion. - • **Stay Connected Anywhere:** With LTE connectivity, your world is just a tap away. - • **Health at Your Fingertips:** Track your heart rate, sleep cycles, and SpO2 levels effortlessly. - • **Smart Assistant on Your Wrist:** Control your day with Google Assistant right from your watch. ## Overview The Samsung Galaxy Watch 4 (40mm) is a feature-rich smartwatch designed for health and fitness enthusiasts. It boasts a vibrant 1.2" Super AMOLED display, advanced health monitoring features including ECG and blood pressure tracking, and is built to withstand the elements with its IP68 water resistance rating. With LTE connectivity, you can stay connected on the go, while its compatibility with various Android devices ensures seamless integration into your digital life. ## Description The Samsung Galaxy Watch 4 is a versatile smartwatch that goes beyond basic functionality. Combining style with practicality, it features a sleek design and a vibrant display. The inclusion of GPS and LTE capabilities enhances its connectivity, allowing users to stay connected and track their activities even when untethered from a smartphone. With comprehensive health and fitness tracking features, it caters to users seeking a well-rounded wearable experience. The watch's integration with various apps and its user-friendly interface make it a reliable companion for those looking to manage their daily tasks, stay connected, and monitor their well-being. ## Features - BioActive Sensor Technology: Advanced sensor measures body composition, heart rate, and blood oxygen levels. - AMOLED Display: Bright and responsive display provides clear visibility of apps, notifications, and fitness data. - Wear OS Powered by Samsung: Access Google apps, Play Store, and seamless Android integration. - Comprehensive Fitness Tracking: Tracks workouts, steps, calories, and multiple exercise modes. - Sleep and Wellness Monitoring: Tracks sleep patterns and provides insights for improved rest and recovery. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B09MV31BQM | | Additional Features | GPS | | Age Range Description | Adult | | Band Color | white | | Band Material Type | Aluminum | | Battery Capacity | 247 milliamp_hours | | Battery Cell Composition | Lithium Ion | | Battery Cell Type | Lithium Ion | | Battery Power | 247 milliamp_hours | | Best Sellers Rank | #19,019 in Amazon Renewed ( See Top 100 in Amazon Renewed ) #328 in Men's Smartwatches #552 in Renewed Smartwatches #4,101 in Smartwatches | | Brand | Samsung | | Built-In Media | Compatible charger | | Case Material Type | Aluminum | | Cellular Technology | 4G | | Clasp Type | Buckle | | Closure Type | Buckle | | Color | Silver | | Communication Feature | True | | Compatible Devices | Smartphone | | Compatible Phone Models | Various Android models | | Connectivity Technology | Bluetooth, Cellular , GPS, Wi-Fi | | Controller Type | Google Assistant | | Customer Reviews | 4.2 out of 5 stars 530 Reviews | | Display Type | AMOLED | | GPS Geotagging Functionality | True | | Human Interface Input | Touchscreen | | Item Dimensions | 6 x 4 x 4 inches | | Manufacturer | Samsung Electronics | | Metrics Measured | Optical Heart Rate Sensor | | Model Name | galaxy | | Model Number | SM-R865 | | Operating System | Android | | Resolution | 396 x 396 | | Screen Size | 40 millimeters | | Shape | Round | | Sim Card Size | eSIM | | Special Feature | GPS | | Sport Type | Fitness, Running | | Style Name | Modern | | Supported Application | GPS, Sleep Monitor | | Supported Satellite Navigation System | GPS | | Target Audience | Unisex Adult | | UPC | 686457982344 | | Warranty Description | 30 days | | Warranty Type | Limited | | Water Resistance Depth | 50 meters | | Water Resistance Level | Water Resistant | | Waterproof Rating | IP68 | | Wearable Computer Type | Smart Watch | | Wireless Communication Standard | Bluetooth | | Wireless Compability | Bluetooth | | Wireless Provider | Unlocked | ## Product Details - **Battery Capacity:** 247 Milliamp Hours - **Battery Cell Composition:** Lithium Ion - **Brand:** Samsung - **Connectivity Technology:** Bluetooth, Cellular, GPS, Wi-Fi - **GPS:** True - **Model Name:** galaxy - **Screen Size:** 40 Millimeters - **Shape:** Round - **Special Feature:** GPS - **Wireless Communication Standard:** Bluetooth ## Images ![Samsung Galaxy Watch4 Aluminum Smartwatch 40mm LTE - Silver (Renewed) - Image 1](https://m.media-amazon.com/images/I/31Xfki5IiDL.jpg) ![Samsung Galaxy Watch4 Aluminum Smartwatch 40mm LTE - Silver (Renewed) - Image 2](https://m.media-amazon.com/images/I/31jsNGi2b3L.jpg) ![Samsung Galaxy Watch4 Aluminum Smartwatch 40mm LTE - Silver (Renewed) - Image 3](https://m.media-amazon.com/images/I/31+OSVz4jYL.jpg) ![Samsung Galaxy Watch4 Aluminum Smartwatch 40mm LTE - Silver (Renewed) - Image 4](https://m.media-amazon.com/images/I/31qnCtNMXGL.jpg) ![Samsung Galaxy Watch4 Aluminum Smartwatch 40mm LTE - Silver (Renewed) - Image 5](https://m.media-amazon.com/images/I/41MaA1FlSCL.jpg) ## Questions & Answers **Q: Does it take blood pressure?** A: It does have a blood pressure /EKG app. The BP app has to be calibrated with a good cuff BP monitor. The accuracy is so-so. The app only works if the watch is paired with a Samsung phone, although there are hacks available to get the app working with other android phones. I have my Galaxy Watch 4 paired with my OnePlus 9 phone and the hacked version of the Samsung Health Monitor app. My evening BP using the Galaxy Watch 4 Health monitor app was 104/61. Taking my BP with my Wellue digital cuff BP monitor on the opposite arm was 115/64. Taking my BP with my Omron wrist cuff BP monitor on the same wrist as the watch was used was 115/65. It's 122 using my Viatom Health Monitor Pro device. Overall the accuracy is "fair." The EKG function only looks for a-fib, but that is the most common arrhythmia. The watch also has a Sp02 function. I actually bought the watch because I needed it for monitoring my continuous glucose monitor (Dexcom G6). Dexcom makes a special watchface/app for the watch that shows the current blood glucose level and has alert settings for lows and highs. My only complaint about the watch is the battery life. I have to charge it twice a day - usually first thing in the morning while I'm having breakfast and then an hour or so before bedtime. I do wear the watch at night to track sleep apnea issues and to alert me if my blood glucose drops below a safe threshold. **Q: What does country or origin mean?** A: No if you have an iPhone get an apple watch **Q: Is this compatible with the A21?** A: I'm not sure I found this information. Hope it helps These devices will still have support on older Samsung phones but not the new Galaxy S21 series. According to a report by Galaxy Club, older Samsung smartwatches and fitness trackers will not be compatible with the Galaxy S21 series.Dec 5, 2022 **Q: Does it work for galaxy A13?** A: It should. It works via Bluetooth to Samsung phones. ## Frequently Bought Together - Samsung Galaxy Watch4 Aluminum Smartwatch 40mm LTE - Silver (Renewed) - SPGUARD 4 Pack Galaxy Watch 7 Screen Protector, Galaxy Watch 6 40mm Tempered Glass Screen Protector Accessories Compatible with Samsung Galaxy 7/6/5/4 40mm (NOT for Others Models) - 4 PACK Bands Compatible with Samsung Galaxy Watch 4 40mm 44mm/ 4 Classic 42mm 46mm, 20mm Adjustable Silicone Sport Replacement Strap for Samsung Galaxy Watch 7/6 / 5/4 / FE Band Women Men --- ## 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/390453835-samsung-galaxy-watch4-aluminum-smartwatch-40mm-lte-silver-renewed](https://www.desertcart.jp/products/390453835-samsung-galaxy-watch4-aluminum-smartwatch-40mm-lte-silver-renewed) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-10-13*