The Handheld Museum: A tribute to the early history of handheld gaming

Grandstand Thunderbirds - For Thunderbirds fans

Grandstand Thunderbirds Series (1991, LCD, 1 LR-44)
View Manual for Danger at Ocean Deep (.PDF file, more info here: Manual Index)
Thunderbirds series, I know of four: Brink of Disaster, Blast into Outer Space, Danger at Ocean Deep (Model# 4179-1) and Pit of Peril. There could be more.