--- product_id: 508366746 title: "SR621SW Watch Batteries - 2 x Seizaiken 364 Equivalent Cell Button Watch Battery Replacement Kit for Watches with Fitting Guide" brand: "swift gift uk" price: "KD 2.47" currency: KWD in_stock: true reviews_count: 13 category: "Swift Gift Uk" url: https://www.desertcart.com.kw/products/508366746-sr621sw-watch-batteries-2-x-seizaiken-364-equivalent-cell-button store_origin: KW region: Kuwait --- # Long shelf life & reliability 3V high voltage power Includes fitting guide SR621SW Watch Batteries - 2 x Seizaiken 364 Equivalent Cell Button Watch Battery Replacement Kit for Watches with Fitting Guide **Brand:** swift gift uk **Price:** KD 2.47 **Availability:** ✅ In Stock ## Summary > 🔋 Power your time with precision and confidence! ## Quick Answers - **What is this?** SR621SW Watch Batteries - 2 x Seizaiken 364 Equivalent Cell Button Watch Battery Replacement Kit for Watches with Fitting Guide by swift gift uk - **How much does it cost?** KD 2.47 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/508366746-sr621sw-watch-batteries-2-x-seizaiken-364-equivalent-cell-button) ## Best For - swift gift uk enthusiasts ## Why This Product - Trusted swift gift uk brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual-Pack Convenience:** Two individually sealed batteries ensure you’re always ready with a fresh power source. - • **Eco-Friendly & Mercury-Free:** Stay responsible with zero mercury content and long-lasting performance. - • **Precision Power from Seizaiken:** Experience ultra-consistent 3V output engineered by Seiko’s trusted battery arm. - • **Step-by-Step Fitting Guide Included:** Never worry about installation—our clear guide makes battery replacement effortless. - • **Risk-Free Purchase with Simple Returns:** Buy confidently with hassle-free returns if you’re not 100% satisfied. ## Overview The SR621SW Seizaiken 364 battery kit offers two premium 3V button cell batteries crafted by Seiko’s renowned Seizaiken division. Designed for long shelf life and mercury-free reliability, this pack includes a detailed fitting guide to simplify watch battery replacement. Ideal for professionals who demand consistent performance and eco-conscious quality, backed by a straightforward return policy. ## Description SR621SW Watch Batteries - 2 x Seizaiken 364 Equivalent Cell Button Watch Battery Replacement Kit for Watches with Fitting Guide: desertcart.co.uk: Fashion Review: Makes sense - I have purchased large Packs of these before BUT by the time I need the third Battery from the Pack, they last a couple of Weeks and then I throw the rest in the Recycle box!!! This way of buying makes sense and the Watch runs for longer because the Quality is better. Review: Very good quality. - *****! Very good quality! Good price. I recommend! ## Features - SEIZAIKEN - Seizaiken are the battery arm of the prestidious Seiko watch making group. Bringing their high quality standards and years of ultra precision technology to produce a battery with consistent quality, high reliability, zero mercury and long long life. - 2 BATTERY PACK - You will receive a a set of two SR621SW Seiko Seizaiken 364 batteries seperatly sealed and both with a long shelf life. Ideal to keep a spare in the draw should you ever need to replace. - REPLACES CODES - SR621SW, 364, D364, V364, SB-AG, 602, 280-34, 080-D29, SR60 - BATTERY FITTING GUIDE - Included with this strip of SR621SW Seiko Seizaiken 364 Batteries is the Swift Gift guide on how to remove your watch back and fit the battery. - SIMPLE RETURNS - If for any reason at all you where unhappy with your item simply sent it back for a full refund. No quibbles at all. You can click the yellow "add to basket" button with confidence. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BSV7R8HC | | Antenna Location | Watch | | Battery Capacity | 1300 Milliampere Hour (mAh) | | Best Sellers Rank | 8,050 in Fashion ( See Top 100 in Fashion ) 26 in Watch Batteries | | Brand Name | Swift Gift UK | | Country of Origin | Japan | | Customer Reviews | 4.6 4.6 out of 5 stars (208) | | Item Weight | 0.02 Kilograms | | Manufacturer | Swift Gift UK | | Model Name | SR621 SW | | Reusability | Single Use | | Unit Count | 2.0 count | | Voltage | 3 Volts | ## Product Details - **Battery capacity:** 1300 Milliampere Hour (mAh) - **Brand:** Swift Gift UK - **Recommended uses for product:** Watch - **Unit count:** 2.0 count - **Voltage:** 3 Volts ## Images ![SR621SW Watch Batteries - 2 x Seizaiken 364 Equivalent Cell Button Watch Battery Replacement Kit for Watches with Fitting Guide - Image 1](https://m.media-amazon.com/images/I/71wG-Tzt6+L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Makes sense *by S***R on 18 March 2026* I have purchased large Packs of these before BUT by the time I need the third Battery from the Pack, they last a couple of Weeks and then I throw the rest in the Recycle box!!! This way of buying makes sense and the Watch runs for longer because the Quality is better. ### ⭐⭐⭐⭐⭐ Very good quality. *by K***F on 9 December 2025* *****! Very good quality! Good price. I recommend! ### ⭐⭐⭐⭐ Battery *by R***Y on 5 February 2026* Ok ## Frequently Bought Together - SR621SW Watch Batteries - 2 x Seizaiken 364 Equivalent Cell Button Watch Battery Replacement Kit for Watches with Fitting Guide - SR920SW Watch Batteries - 2 x Seizaiken 371 Equivalent Cell Button Watch Battery Replacement Kit for Watches with Fitting Guide - SR626SW Watch Batteries - 377 x 2 Seizaiken Equivalent Cell Button Watch Battery Replacement Kit for Watches with Fitting Guide --- ## 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/508366746-sr621sw-watch-batteries-2-x-seizaiken-364-equivalent-cell-button](https://www.desertcart.com.kw/products/508366746-sr621sw-watch-batteries-2-x-seizaiken-364-equivalent-cell-button) --- *Product available on Desertcart Kuwait* *Store origin: KW* *Last updated: 2026-05-15*