--- product_id: 49132592 title: "1 X Renata 379 Mercury Free 1.55 Volt Watch Battery Replaces SR521SW" brand: "renata" price: "KD 1.91" currency: KWD in_stock: true reviews_count: 13 category: "Renata" url: https://www.desertcart.com.kw/products/49132592-1-x-renata-379-mercury-free-1-55-volt-watch store_origin: KW region: Kuwait --- # 16.0mAh long-lasting capacity 1.55V stable power 5.8mm compact diameter 1 X Renata 379 Mercury Free 1.55 Volt Watch Battery Replaces SR521SW **Brand:** renata **Price:** KD 1.91 **Availability:** ✅ In Stock ## Summary > ⏳ Power your moments with precision and eco-friendly energy! ## Quick Answers - **What is this?** 1 X Renata 379 Mercury Free 1.55 Volt Watch Battery Replaces SR521SW by renata - **How much does it cost?** KD 1.91 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/49132592-1-x-renata-379-mercury-free-1-55-volt-watch) ## Best For - renata enthusiasts ## Why This Product - Trusted renata brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Precision Fit:** 5.8mm diameter and 2.1mm height for seamless replacement - • **Reliable Voltage:** Consistent 1.55V output keeps your watch ticking flawlessly - • **Mercury-Free Power:** Eco-conscious energy for your timepiece - • **Long-Lasting Capacity:** 16.0mAh ensures extended battery life without frequent swaps - • **Trusted Renata Quality:** Swiss-engineered performance trusted by professionals ## Overview The Renata 379 is a mercury-free, silver oxide button cell battery delivering a stable 1.55V and 16.0mAh capacity. Its compact 5.8mm diameter and 2.1mm height make it an exact replacement for SR521SW, ensuring reliable, long-lasting performance for your watch with trusted Swiss quality. ## Description 1 X Renata 379 Mercury Free 1.55 Volt Watch Battery Replaces SR521SW Review: A diy job if researched properly and you have basic watch repair tools. - Watch battery replacement. An easy battery swap on a Bering watch. The proceedure is easily researched online and a basic tool kit enabled me to carry out the job at home. The back was a snap off type which was easily removed and refitted after changing the battery. Caution though I have come across some watch backs that have prove difficult to press fit. Review: Value for money - As described ## Features - 379 Silver Oxide Button Cell - Battery Capacity 16.0mAh - Battery Technology Silver Oxide (Single Use) - Diameter 5.8mm , Height 2.1mm - Voltage 1.55V ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B001MRPHVC | | Amperage | 1.55 Amps | | Antenna Location | Watch | | Battery Capacity | 16 Milliampere Hour (mAh) | | Battery Cell Type | Other Than Listed | | Battery Weight | 9 Grams | | Best Sellers Rank | 48,893 in Fashion ( See Top 100 in Fashion ) 84 in Watch Batteries 657 in Disposable Household Batteries | | Brand Name | Renata | | Country of Origin | Switzerland | | Customer Reviews | 4.6 4.6 out of 5 stars (2,390) | | Item Dimensions | 10 x 10 x 10 millimetres | | Item Weight | 0.02 Pounds | | Manufacturer | Renata | | Model Name | 379 | | Model Number | 379 | | Number of Batteries | 1 LR44 batteries required. | | Reusability | Single Use | | UPC | 785618379310 785618327311 785618379303 | | Unit Count | 1 Count | | Voltage | 1.55 Volts | ## Product Details - **Battery capacity:** 16 Milliampere Hour (mAh) - **Battery cell composition:** Other Than Listed - **Brand:** Renata - **Number of batteries:** 1 LR44 batteries required. - **Recommended uses for product:** Watch ## Images ![1 X Renata 379 Mercury Free 1.55 Volt Watch Battery Replaces SR521SW - Image 1](https://m.media-amazon.com/images/I/71b4aLZe+DL.jpg) ![1 X Renata 379 Mercury Free 1.55 Volt Watch Battery Replaces SR521SW - Image 2](https://m.media-amazon.com/images/I/61XtwBnvXqS.jpg) ![1 X Renata 379 Mercury Free 1.55 Volt Watch Battery Replaces SR521SW - Image 3](https://m.media-amazon.com/images/I/71DzPTuC5wS.jpg) ![1 X Renata 379 Mercury Free 1.55 Volt Watch Battery Replaces SR521SW - Image 4](https://m.media-amazon.com/images/I/51TA2dTcJqS.jpg) ![1 X Renata 379 Mercury Free 1.55 Volt Watch Battery Replaces SR521SW - Image 5](https://m.media-amazon.com/images/I/61UFtGTndsS.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ A diy job if researched properly and you have basic watch repair tools. *by S***Y on 30 October 2025* Watch battery replacement. An easy battery swap on a Bering watch. The proceedure is easily researched online and a basic tool kit enabled me to carry out the job at home. The back was a snap off type which was easily removed and refitted after changing the battery. Caution though I have come across some watch backs that have prove difficult to press fit. ### ⭐⭐⭐⭐⭐ Value for money *by T***T on 4 November 2025* As described ### ⭐⭐⭐⭐ Good *by G***M on 18 March 2025* Good as expected. Little bit pricey ## Frequently Bought Together - Renata Silver Oxide Watch Battery For 379 Button Cell - 2 Renata 377 SR626SW Silver Oxide Zero Mercury Electronic Batteries - 2 Renata 364 SR621SW Silver Oxide Zero Mercury Electronic Batteries --- ## 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.com.kw/products/49132592-1-x-renata-379-mercury-free-1-55-volt-watch](https://www.desertcart.com.kw/products/49132592-1-x-renata-379-mercury-free-1-55-volt-watch) --- *Product available on Desertcart Kuwait* *Store origin: KW* *Last updated: 2026-05-18*