Button Battery Watch Battery SR721SW x 4 pcs (#156)

LR721 Compatible with SR721SW, 4 pcs

★Products will be delivered in OPP film packaging to protect them from rain and moisture.

Compatible Button Batteries
SR721SW/AG11/LR721/G11/LR58/V362/19/SR58/162/GP62A/362/SR721W

The package may indicate it's a silver oxide battery SR721SW, but due to some listings showing it as an alkaline battery, we are listing it as LR721.

Generally, SR model numbers refer to silver oxide batteries, which have a stable voltage ideal for watches, but are more expensive.
For simple analog watches, use cost-effective alkaline compatible batteries.

The model numbers below are all the same specification, with only different markings.
Basically, batteries with the same model number are compatible, even if they are from different manufacturers.
SR721SW/AG11/LR721/G11/LR58/V362/19/SR58/162/GP62A/362/SR721W

Manufacturer: Koonenda
Type: Button Alkaline Battery
Model Number: LR721 (362)
Nominal Voltage: 1.55V
Size: 7.9mm x 2.1mm
Recommended Expiration Date: 2030 or later

((Precautions when replacing batteries))
The top surface (where the model number is engraved) is positive (+), and the bottom surface (back) is negative (-).
Electricity flows when the positive and negative terminals are connected. (Electricity will flow even if you hold it with your fingers.)
If you use metal tweezers to grip both the top and bottom of the battery, it will cause a short circuit. For silver oxide batteries (SR series), this can completely discharge the battery in less than 30 seconds (or about 10 seconds for batteries with smaller capacity).