From Bandai's PROPLICA product series, it's the Dragon Radar from Dragon Ball! Features electronic light and sound effects (most likely LED lights will flash behind a simulated screen, meaning it's not an actual functioning screen). Measures approximately 10 cm in diameter (about 3.9 inches); made of ABS plastic. Includes a custom stand and carrying strap!
Note - North American release version; additional description provided by the distributor:
PROPLICA is a series of high-quality, life-sized replicas of fantastic gadgets and gear for discerning adult collectors, and this replica of the Dragonradar is the ultimate collectible for Dragon Ball fans! Click the button to trigger different display modes and realistic sound effects. Who knows -- maybe you'll find a Dragon Ball yourself! The set includes a stand and a carrying strap. (Including LR44 x3 batteries)