--- product_id: 147486557 title: "OPTA SB-137 Eunomia Bluetooth Fitness Smart Watch with Strava Integration, Medium (Black)" brand: "opta" price: "€ 6.40" currency: EUR in_stock: false reviews_count: 4 url: https://www.desertcart.hr/products/147486557-opta-sb-137-eunomia-bluetooth-fitness-smart-watch-with-strava store_origin: HR region: Croatia --- # 3-in LCD color display 200mAh magnetic charging 4 sports modes + Strava sync OPTA SB-137 Eunomia Bluetooth Fitness Smart Watch with Strava Integration, Medium (Black) **Brand:** opta **Price:** € 6.40 **Availability:** ❌ Out of Stock ## Summary > ⌚ Elevate your fitness game with style and smart precision! ## Quick Answers - **What is this?** OPTA SB-137 Eunomia Bluetooth Fitness Smart Watch with Strava Integration, Medium (Black) by opta - **How much does it cost?** € 6.40 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/147486557-opta-sb-137-eunomia-bluetooth-fitness-smart-watch-with-strava) ## Best For - opta enthusiasts ## Why This Product - Trusted opta brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Power Through Your Day:** Long-lasting 200mAh battery with easy magnetic charging keeps you connected without interruption. - • **Smart Alerts at a Glance:** Receive and manage calls, messages, and social notifications directly from your wrist—never miss a beat. - • **Sync Your Fitness Journey:** Integrated Strava support and 4 sports modes to elevate your workout and share your progress. - • **Control Your World Remotely:** Take photos and control music on your phone with intuitive watch commands for hands-free convenience. - • **Stay Ahead with Real-Time Health Metrics:** Track heart rate, blood pressure & SpO2 seamlessly on a vibrant 3-inch color screen. ## Overview The OPTA SB-137 Eunomia is a sleek Bluetooth fitness smartwatch featuring a 3-inch vibrant LCD, real-time heart rate, blood pressure, and SpO2 monitoring, plus 4 sports modes with Strava integration. It offers smart notifications, remote camera and music control, and a 200mAh battery with magnetic charging, designed for professionals who demand health insights and seamless connectivity on the go. ## Description Full description not available ## Features - Blood pressure, heart rate, pedometer;the product contains small components that can be a choking hazard - All in one health (heart rate, bp and spo2) and fitness activity tracker with 4 inbuilt sports modes. Note- this data is only for your reference to adjust your exercise and not for medical purposes. - 1. 3 inch large tft color screen having a square display with a touch key button operation. 4 watch faces. 200 mah battery with a magnetic 2 pin charging mode. - Intelligent notifications on the watch like calls (you can even reject a call from your watch), sms, weather, whatsapp, fb etc - bluetooth enabled - App name - happy sport app: Compatible with android 4. 4 and above: IOS 7 and above - Strava integration on the app, remote camera and music control, sedentary alert, alarm and stopwatch - Do not check call notifications or other data on the product's display while driving or in other situations where distractions could be hazardous - Consult your doctor before use if you have any preexisting conditions that might be affected by your use of this OPTA product - Consult your doctor before beginning or modifying any exercise program; the device contains electrical equipment that could cause injury if not handled properly - This product is not a medical device, and is not intended to diagnose, treat, cure, or prevent any disease ## Technical Specifications | Specification | Value | |---------------|-------| | Batteries Included | Yes | | Brand | OPTA | | Colour | Black | | Compatible with | Smartphone | | Display Size | 3 Inches | | Display Type | LCD | | Shape | Rectangular | | Material Type | Stainless Steel, Zinc | | Meter | Optical Heart Rate Sensor, Sphygmomanometer | | Size | M | | Features | Alarm Clock, Blood Pressure Monitor, Camera, Notifications | | Sport | Fitness | | Style | Eunomia Bluetooth Fitness Smart Watch with Strava Integration | | Wattage | 40 Watts | | Manufacturer | OPTA | | Imported By | OPTA | ## Product Details - **Operating System:** Android - **Special Feature:** Alarm Clock, Blood Pressure Monitor, Camera, Notifications - **Battery Capacity:** 2E+2 Milliamp Hours - **Connectivity Technology:** Bluetooth - **Wireless Communication Standard:** Bluetooth ## Images ![OPTA SB-137 Eunomia Bluetooth Fitness Smart Watch with Strava Integration, Medium (Black) - Image 1](https://m.media-amazon.com/images/I/51wpaAvB9FL.jpg) ![OPTA SB-137 Eunomia Bluetooth Fitness Smart Watch with Strava Integration, Medium (Black) - Image 2](https://m.media-amazon.com/images/I/61qTtAWhTUL.jpg) ![OPTA SB-137 Eunomia Bluetooth Fitness Smart Watch with Strava Integration, Medium (Black) - Image 3](https://m.media-amazon.com/images/I/618sMIEc5UL.jpg) ![OPTA SB-137 Eunomia Bluetooth Fitness Smart Watch with Strava Integration, Medium (Black) - Image 4](https://m.media-amazon.com/images/I/61CdnnSCiQL.jpg) ![OPTA SB-137 Eunomia Bluetooth Fitness Smart Watch with Strava Integration, Medium (Black) - Image 5](https://m.media-amazon.com/images/I/61kIEWVFBnL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐ 4.0 out of 5 stars Bad watch from opta *by P***Y on Reviewed in India on 28 May 2021* Stop working after 1 and half year..no customer support after multiple follow up. Bluetooth connection is poor.Accuracy not checked yet. ### ⭐ 1.0 out of 5 stars Disappointed *by A***A on Reviewed in India on 12 June 2020* There is nothing to like.Screen goes blank with in seconds. If you are looking for a sports watch then go for Garmin. ### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars 5 *by V***A on Reviewed in India on 16 November 2019* Nice product --- ## 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.hr/products/147486557-opta-sb-137-eunomia-bluetooth-fitness-smart-watch-with-strava](https://www.desertcart.hr/products/147486557-opta-sb-137-eunomia-bluetooth-fitness-smart-watch-with-strava) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-12*