Bic Camera is a well-known electronic mega house and with 42 stores across Japan, you will most definitely come across one at some point or another. Bic Camera is pretty darn big so there are helpful multi lingual floor guides located at the entrance. Each floor has its own focus, cameras on the 3rd floor, mobile phones on the 5th etc. You can find almost everything that can be operated by electricity or batteries. The prices are reasonable and the stores are open 365 days a year. They also offer a tax-free service so don’t forget to bring your passport.