---
product_id: 305063053
title: "SR521SW (379) Silver Oxide Watch Battery (Pack of 5)"
brand: "seizaiken"
price: "30.29 DT"
currency: TND
in_stock: true
reviews_count: 8
category: "Seizaiken"
url: https://www.desertcart.tn/products/305063053-sr521sw-379-silver-oxide-watch-battery-pack-of-5
store_origin: TN
region: Tunisia
---

# 0% mercury eco-safe 1.55V stable power leakage-resistant design SR521SW (379) Silver Oxide Watch Battery (Pack of 5)

**Brand:** seizaiken
**Price:** 30.29 DT
**Availability:** ✅ In Stock

## Summary

> ⏱️ Power your time, sustainably and reliably!

## Quick Answers

- **What is this?** SR521SW (379) Silver Oxide Watch Battery (Pack of 5) by seizaiken
- **How much does it cost?** 30.29 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/305063053-sr521sw-379-silver-oxide-watch-battery-pack-of-5)

## Best For

- seizaiken enthusiasts

## Why This Product

- Trusted seizaiken brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Precision Engineered:** Manufactured in ultra-clean environments for unmatched reliability.
- • **Ready for Your Wrist:** Pack of 5 ensures you’re always prepared—never miss a moment.
- • **Reliable Power Boost:** Consistent 1.55V output keeps your watch ticking flawlessly.
- • **Leak-Proof Confidence:** Advanced crimping technology prevents messy leaks and extends battery life.
- • **Eco-Friendly Innovation:** Mercury-free composition aligns with your green lifestyle values.

## Overview

The SR521SW Silver Oxide Watch Battery delivers a stable 1.55V power source with zero mercury content, ensuring an eco-friendly and reliable energy solution. Engineered with advanced leakage resistance and precision manufacturing, this pack of 5 button cells is designed to keep your wristwatch running smoothly while supporting environmental safety.

## Description

EcologyThe introduction and adoption of new technologies made it possible to avoid using mercury and lead, which are environmentally harmful. Excellent leakage resistance Other than eliminating the need for mercury in the compound, these batteries are manufactured to have excellent leakage resistance attained by our newly developed crimping structure. This is made possible by our new high-performance manufacturing machinery and process.High reliability Production in our high precision clean room environment thoroughly prevents contamination – resulting in the most consistent, highest reliability battery.

Review: Good - Genuine product
Review: Good one. - A good product.

## Features

- 0% Mercury
- SW Button cell 1.55V for Wrist Watch
- Environment Safe and Low Self Discharge
- Do not try to Charge it (Non - Rechargeable)
- Cell Battery for Watches

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01EBCFWYG |
| Batteries Required | No |
| Battery Description | button cells |
| Battery cell composition | Silver Oxide |
| Brand | Seizaiken |
| Compatible Devices | Watch |
| Country of Origin | India |
| Customer Reviews | 3.9 3.9 out of 5 stars (134) |
| Date First Available | 16 June 2020 |
| Generic Name | watch |
| Item Weight | 3 g |
| Manufacturer | Seiko Instruments Inc. |
| Net Quantity | 5 Count |
| Package Dimensions | 18.5 x 5 x 0.7 cm; 3 g |
| Power Source | battery powered |
| Voltage | 1.55 Volts |

## Product Details

- **Battery Cell Composition:** Silver Oxide
- **Brand:** Seizaiken
- **Compatible Devices:** Watch
- **Manufacturer:** Seiko Instruments Inc.
- **Net Quantity:** 5 Count
- **Recommended Uses For Product:** Watch
- **Reusability:** Rechargeable
- **Voltage:** 1.55 Volts

## Images

![SR521SW (379) Silver Oxide Watch Battery (Pack of 5) - Image 1](https://m.media-amazon.com/images/I/41+ax0XR5-L.jpg)
![SR521SW (379) Silver Oxide Watch Battery (Pack of 5) - Image 2](https://m.media-amazon.com/images/I/41HtBfCQ7RL.jpg)
![SR521SW (379) Silver Oxide Watch Battery (Pack of 5) - Image 3](https://m.media-amazon.com/images/I/819lCRWfuuL.jpg)
![SR521SW (379) Silver Oxide Watch Battery (Pack of 5) - Image 4](https://m.media-amazon.com/images/I/81jYLytb69L.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: How many year it will work**
A: Typically 1-2 years

**Q: Can I get only one quantity**
A: No, may not be practical for the seller

**Q: I need 100 batteries. What is the cost?**
A: Multiply by 10

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good
*by M***I on 29 September 2024*

Genuine product

### ⭐⭐⭐⭐ Good one.
*by B***H on 19 May 2022*

A good product.

### ⭐⭐⭐⭐⭐ Working well
*by M***J on 18 June 2022*

It was very difficult to find this battery in the shop, found online and it is working perfectly in Swatch watch.

---

## 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.tn/products/305063053-sr521sw-379-silver-oxide-watch-battery-pack-of-5](https://www.desertcart.tn/products/305063053-sr521sw-379-silver-oxide-watch-battery-pack-of-5)

---

*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-02-09*