KEPO KP50170SP1-5807 1.97 inch 5 cm Mini speaker 0.25 W 8 Ω

Impedance (integer): 8 Ω; Max. frequency: 20000 Hz; Max. load (W): 0.5 W; Min. frequency: 450 Hz; RMS capacity: 0.25 W; Recess depth: 17 mm; Recess diameter: 50 mm; Sound pressure: 86 dB; Speaker size (cm): 5 cm; Speaker size (inch): 1.97 inch

Price: 2.79 from Conrad Electronic