LSI Game Cosmo Mobile (19xx, LCD, Watch Batteries, Model# ?)
This game has a built-in FM radio. This game is manufactured by Morioka Tokei, Inc. I'm not sure if this was their own label (they made a lot of games made by several other manufacturers like Matsushima and Masudaya), or if the distributor just didn't put their name on it (as I've found several games that just have this 'LSI' logo on them).
Do I have this? No.