TRU COMPONENTS Mini speaker 7.7 cm 1 W 8 Ω 91 dB Plastic diaphragm, Transparent diaphragm

Impedance (integer): 8 Ω; Max. frequency: 7000 Hz; Max. load (W): 2 W; Min. frequency: 320 Hz; Plastic free packaging: Plastic-free packaging; RMS capacity: 1 W; Recess depth: 20 mm; Recess diameter: 77 mm; Sound pressure: 91 dB; Speaker features: Plastic diaphragm, Transparent diaphragm; Speaker size (cm): 7.7 cm; Speaker size (inch): 3.03 inch

Price: £ 4.79 from Conrad Electronic