When you buy an item from us, batteries are included.
The following are replacement batteries.
371 (also known as LR920, SR920) fits:
Loupe 10X21-L (takes 4)
This is a very low value item. We have a minimum order charge of £7.50 (£6.25 + VAT). Is this the only item you require? You may wish to buy more than one, or add some other items to the order.