I have main unit.
type handheld game console
Tronica Space Revenger — Space Shooter LCD Game
Tronica Space Revenger was a space-shooter LCD handheld from Tronica — a budget electronics brand that produced affordable gaming devices for the European and international market throughout the 1980s. Space-themed shooters were among the most popular categories for LCD handheld games, with the clean visual language of spacecraft and aliens translating well to the fixed-graphic LCD format. The ”Space Revenger” name echoed the Space Invaders template that dominated the space-shooter genre following Taito’s landmark 1978 arcade game. Tronica’s products were typically sold through budget retailers at price points below the major Japanese gaming brands, bringing affordable space-shooting entertainment to the broad consumer market.