シリアル番号 です
shiriarubangōdesu
1. Serial number.
Noun
#201544
1. Serial number.
1. telephone number
1. number on the back of a player's uniform; uniform number
1. serial
1. cereal; breakfast cereal
1. number; series of digits
1. registration number
1. account number (bank, etc.)
1. Was the phone number.