do they come with an expiration date? i'd like to know how long they're expected to last.

Got mine today. Package dated for 2015 (4 years ago now). All batteries were dead. While no expiration date, you want the freshest batteries as possible as these only have a life span of about 3 yrs. I normally wouldn't bash a seller before contacting them, but these are not eligible for return.

I assume you can use these to replace either 370 or 371 watch batteries? Does that mean there's no difference between 370 and 371?

370 is alkaline, 371 is silver oxide. Silver oxide batteries are capable of putting out higher current, so they're listed as for "high drain". Perhaps for watches with a backlit screen? Both have the same capacity though, 39mAh. Who knows, why not just get the 371 silver oxide, right? They have a much longer shelf life than alkaline.

do these batteries work for the michael kors watch model MK 5055?

Yes. I'm changing the battery in my wife's MK 5055 as we speak. Keep in mind the directions on the inside of the case to short the batteries positive terminal and the AC point after changing the battery.

which battery last longer? alkaline,silver oxide or lithium

In terms of shelf life, lithium lasts the longest, followed by silver oxide and alkaline

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Energizer 371/370 Silver Oxide Watch Battery (5 per Pack)

Product ID: 278576553

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Details

Number of batteries
1 LR44
Brand
Energizer
Battery cell composition
Silver Oxide
Battery capacity
34 Milliamp
Recommended uses for product
Hearing Aid

⏳Long-lasting power

⚡High energy density

🇺🇸Made in USA quality

Description

⏰ Power your moments with precision and reliability!

RELIABLE POWER BOOST - Keep your watches and gadgets ticking flawlessly with Energizer’s high-performance silver oxide cells.
PACK OF 5 CONVENIENCE - Never run out—five batteries per pack ensure you’re always prepared for replacements.
PRECISION FIT FOR WATCHES - Specifically engineered for watch models 371/370, guaranteeing perfect compatibility and optimal performance.
TRUSTED AMERICAN CRAFTSMANSHIP - Proudly made in the USA, delivering consistent quality and durability you can count on.
VERSATILE ELECTRONICS ESSENTIAL - Ideal not just for watches but a variety of small electronics, making it a must-have for your tech arsenal.

The Energizer 371/370 Silver Oxide Watch Battery pack includes five high-quality, long-lasting batteries designed specifically for watches and small electronics. Manufactured in the USA, these batteries offer reliable energy density and precise fit, ensuring your devices stay powered when it matters most.

Specifications

Manufacturer	Energizer
Item model number	371
Package Dimensions	13.79 x 4.6 x 1.7 cm; 10 g
ASIN	B003D1YFFE

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