They just show ( best before ) on the package. There is no date of manufacture. They usually last five years though. I always pull out the stem on my watches when I don’t use them for awhile to save the battery.

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399 SR927W Batteries - 1.55V Silver Oxide 399 Watch Battery (2 Count)

Product ID: 426137899

Details

Battery Capacity
53
Battery Cell Composition
Silver Oxide
Brand
Renata
Number of Batteries
2 Product
Recommended Uses For Product
Calculators

⚡1.55V Nominal Voltage

🔋53mAh High Capacity

🛡️Superior Leakage Resistance

38.67 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔋 Stay powered, stay ahead — never miss a moment!

SWISS PRECISION - Crafted with Swiss quality for consistent, dependable performance every time.
POWER THAT LASTS - Reliable 1.55V output ensures your devices stay energized longer.
LOW SELF DISCHARGE - Keeps high capacity even after long storage, so it’s ready when you are.
LEAK PROOF CONFIDENCE - Advanced leakage resistance protects your valuable electronics from damage.
VERSATILE COMPATIBILITY - Perfect for watches, cameras, calculators, car remotes, and more—one battery fits all.

Renata 399 SR927W Silver Oxide batteries deliver a steady 1.55V with 53mAh capacity, engineered in Switzerland for superior leakage resistance and low self-discharge. Ideal for precision devices like watches, cameras, and keyless remotes, these batteries combine reliability and longevity to keep your essential gadgets running flawlessly.

Specifications

ASIN	B09VVNG6SL
Antenna Location	Calculators,Camera,Car Security Alarm,Keyless Car Remotes,Watch,Watches
Battery Capacity	53 milliamp_hours
Battery Cell Type	Silver Oxide
Best Sellers Rank	#20,237 in Health & Household ( See Top 100 in Health & Household ) #141 in Coin & Button Cell Batteries
Brand	Renata
Customer Reviews	4.6 4.6 out of 5 stars (2,383)
Included Components	Battery
Item Weight	9 g
Manufacturer	Renata Batteries
Number of Batteries	2 Product Specific batteries required. (included)
Reusability	Single Use
UPC	040048065517
Unit Count	2 Count
Voltage	1.55 volts

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38.67 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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