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⏰ Power your moments with Swiss precision — don’t let your watch miss a beat!
The Renata #399 (SR927W) watch batteries deliver reliable, long-lasting power with precision engineering from Switzerland. Featuring silver oxide chemistry, these 1.55V batteries offer optimized capacity and leak-proof sealing, making them ideal for premium watch brands like Swatch, Fossil, Timex, and Casio. Packaged for freshness and ease of use, this 5-pack ensures your timepieces stay accurate and protected.
| ASIN | B0084E91UE |
| Antenna Location | Watch |
| Battery Capacity | 3 Volts |
| Battery Cell Composition | Silver Oxide |
| Battery Cell Type | Silver Oxide |
| Battery Weight | 4 Grams |
| Best Sellers Rank | #25,404 in Health & Household ( See Top 100 in Health & Household ) #161 in Coin & Button Cell Batteries |
| Brand | Renata |
| Compatible Phone Models | Watch |
| Customer Reviews | 4.6 out of 5 stars 2,291 Reviews |
| Item Dimensions | 6 x 2.5 x 0.3 inches |
| Item Weight | 4 Grams |
| Manufacturer | Renata |
| Model Name | Renata |
| Model Number | 399 |
| Number of Batteries | 1 LR44 batteries required. (included) |
| Recommended Uses For Product | Watch |
| Reusability | Single Use |
| UPC | 785618369410 784922286581 |
| Unit Count | 5 Count |
| Voltage | 1.55 Volts |
G**G
Seems good.
Fit well in an old pocket calculator. Arrived on time and in good condition. Of course no idea yet on battery life.
S**S
Renata Swiss Silver Oxide Watch Battery vs. American Alkaline Quartz Movement Watch Battery.
I chose Renata 399 SR927 W Silver Oxide Swiss made battery for my Invicta Chronographs and my other quartz movement time pieces. Special notation, Silver Oxide batteries are also made in the United States. I prefer buying the Renata Swiss made version. 399 SR927 W Silver Oxide Swiss Made Battery Features: Long-lasting power: This battery provides a stable and consistent power supply for extended periods. High capacity: Despite its compact size, the SR927W battery has a relatively high energy density, allowing it to store a significant amount of power. Reliable performance: With a low self-discharge rate, the SR927W battery retains its charge even when not in use, ensuring it is ready when needed. Wide temperature range: It can operate effectively across a broad range of temperatures, making it suitable for both indoor and outdoor applications. Compact and lightweight: The small size and lightweight nature of the SR927W battery make it convenient for use in portable devices. Although Alkaline batteries are used as watch batteries, it is my recommendation to use alkaline batteries which are best suited for digital analog watches and other such devices. They do have a shorter shelf life compared to silver oxide batteries, but they still last pretty long regardless. They are cheaper to make (hence the smaller cost), the only problem with alkaline watch cells is if they are left unchanged after there is no longer voltage current over an extended period of time, they could potentially leak and could cause corrosion and damage to your watch or other devices that use these types of batteries. Always check your time piece for the type of battery you are replacing. You may also consult with your local jeweler or manufacture.
J**D
Great value
perfect fit for SR927SW and works great.
M**A
Watch batteries
basic battery for watches. Will see how long they last and update later. Quick and easy purchase, arrived on time.
P**C
Saved $$
CHANGED THE BATTERIES FOR MY G-SHOCK (YEP STILL WORKS) AND THESE WERE JUST RIGHT! Saved $ from changing them myself!
G**R
Inexpensive and effective
Cost effective alternative to purchasing them singly in the store. Effective batteries without completing. Highly recommend.
S**P
Fast delivery
Worked in watch
R**V
they work
good product
R**S
Easy way to save money
Great replacement battery for a tissot and a fraction of the price for a replacement at timpsons
J**G
It works well.
I have got the exact battery for my watch.
N**I
Super
Sehr gut
M**O
Ok
Spedizione e materiale perfetto
R**E
399 wach
Thank you for my order and the seller is excellent and the quality and. value for money and good battery life
Trustpilot
2 weeks ago
5 days ago