Is this the correct battery for a Pentax Spotmatic2? Present has no marking.

Yes, the energizer 387S is the recommended replacement battery for your camera. "Users of the Spotmatic, Spotmatic II (SPII), Spotmatic IIa, SP500, and SP1000 will be able to replace their batteries with a 1.5volt Silver-Oxide battery". It a on-line order item. You can also use the 1.5v Energizer 389 and you should be able to buy the 389 at local shops.

Has anyone tried this in an asahi pentax sp500?

I use this battery in a 1970 Bulova Accutron watch but according to google you can use it in your camera as well. I copied the following from a google query: Buy Energizer 387S Low-Drain 1.55V Silver-Oxide Button Cell Battery on ... It fits my Pentax Spotmatic SP500 film camera perfectly (no O-ring required).

Would this battery work on the Bulova Perfectionist c977745 watch?

It worked on my bulova space view (internal tuning fork) watch. Not sure if this will help you, but it might

Would this battery work for a honeywell pentax sp1000?

Dont’t know.It also didn’t work in what I ordered it for but too much hassle to return it for is value

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Energizer 387S Low-Drain 1.55V Silver-Oxide Button Cell Battery

Product ID: 9442028

Details

Battery Capacity
60 Milliamp
Battery Cell Composition
Silver Oxide
Brand
Energizer
Number of Batteries
1 Product
Recommended Uses For Product
Watch

⏳600 hours endurance

⚡1.55V high energy density

🔋60mAh reliable capacity

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Description

🔋 Power your precision with the battery that never quits.

PRECISION FIT - Compact 11.6mm diameter and 3.6mm thickness designed for seamless replacement in watches, calculators, and cameras.
POWER THAT LASTS - Delivers a steady 1.55 volts for consistent performance in low-drain devices.
LEGACY COMPATIBLE - Perfect drop-in replacement for Rayovac RW51 and vintage Accutron watches—preserve your timeless tech.
PEACE OF MIND WARRANTY - Backed by a lifetime limited warranty for worry-free power on the go.
ENDURANCE YOU CAN TRUST - Rated for approximately 600 hours of reliable use—keeps your essentials running longer.

The Energizer 387S Silver Oxide Button Cell Battery offers a reliable 1.55V output with 60mAh capacity, engineered for continuous low-drain devices like watches, calculators, and cameras. Compact and compatible with legacy models such as Rayovac RW51, it delivers approximately 600 hours of dependable power, backed by a lifetime limited warranty.

Specifications

ASIN	B00006G9SE
Amperage	1.5 Amps
Antenna Location	Watch
Battery Capacity	60 Milliamp Hours
Battery Cell Type	Silver Oxide
Best Sellers Rank	#120,372 in Health & Household ( See Top 100 in Health & Household ) #673 in Coin & Button Cell Batteries
Brand	Energizer
Built-In Media	Battery
Customer Reviews	4.5 4.5 out of 5 stars (424)
Global Trade Identification Number	00039800064554
Item Dimensions	2 x 1 x 0.1 inches
Item Weight	9.07 g
Manufacturer	Energizer
Model Number	387S
Number of Batteries	1 Product Specific batteries required. (included)
Reusability	Single Use
UPC	039800110916 039800064554
Unit Count	1 Count
Voltage	1.55 Volts

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VT3517

Duties & taxes included

In stock

Sold byAmazon VanuatuDelivered 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 Vanuatu.

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