LSM-S30M/K 1.1 inch 2.8 cm Mini speaker 1 W 8 Ω Ovale, Transparent diaphragm

Impedance (integer): 8 Ω; Max. frequency: 20000 Hz; Max. load (W): 2 W; Min. frequency: 450 Hz; RMS capacity: 1 W; Recess depth: 11 mm; Sound pressure: 84 dB; Speaker features: Ovale, Transparent diaphragm; Speaker size (cm): 2.8 cm; Speaker size (inch): 1.1 inch

Price: £ 5.99 from Conrad Electronic