BEWELLW086B Mens Wooden Watch Analog Quartz Lightweight Handmade Wood Wrist Watch (Ebony Wood)

I need to replace my watch's battery. Does anyone know the correct specification and the store where I can buy it from?

What size batteries does this watch take??

I got a watch similar to this from a friend but it broke. How do I get new links for the band?

Does it come with sizing tools?