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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Renata 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 stable power

🔋53mAh high capacity

🛡️Superior leakage resistance

38.42 DT

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Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⏱️ Power your precision with Swiss-made reliability!

READY WHEN YOU ARE - Low self-discharge keeps batteries fresh in storage, so they’re always ready to perform.
LONG LASTING ENERGY - 53mAh capacity ensures your devices run longer without frequent replacements.
SWISS PRECISION POWER - Experience consistent 1.55V output trusted by premium watchmakers.
LEAK PROOF RELIABILITY - Advanced silver oxide chemistry prevents corrosion and protects your valuable devices.
VERSATILE COMPATIBILITY - Perfect for watches, cameras, calculators, car alarms, and keyless remotes.

Renata 399 SR927W Silver Oxide batteries deliver a stable 1.55V output with 53mAh capacity, engineered in Switzerland for superior leakage resistance and long shelf life. Ideal for watches and a variety of small electronics, these batteries combine compact design with dependable, long-lasting power to keep your essential devices 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	#20,050 in Health & Household ( See Top 100 in Health & Household ) #138 in Coin & Button Cell Batteries
Brand	Renata
Customer Reviews	4.6 4.6 out of 5 stars (2,375)
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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38.42 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

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Farhan Q.

The delivery time was excellent, and the packaging was secure.

2 months ago

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