TRU COMPONENTS 1.1 inch 2.8 cm Mini speaker 0.5 W 8 Ω

Impedance (integer): 8 Ω; Max. frequency: 20000 Hz; Max. load (W): 1 W; Min. frequency: 650 Hz; Plastic free packaging: Plastic-free packaging; RMS capacity: 0.5 W; Recess depth: 5 mm; Recess diameter: 28 mm; Sound pressure: 88 dB; Speaker size (cm): 2.8 cm; Speaker size (inch): 1.1 inch

Price: 2.79 from Conrad Electronic