Visaton K-14.25 1.4 x 2.5 cm (0.5" x 1") small speaker with plastic membrane and rectangular plastic basket. Small size, therefore suitable for signal output in devices where little space is available. The connection is made via soldering points on the back. Technical data Nominal load capacity 1W Music resilience 1.5W Nominal impedance Z 8 ohms Transmission range (-10 dB) 500-20000Hz Average sound pressure level 72dB (1W/1m) Resonance frequency fs 950Hz Voice coil diameter 8.7mm Wrap height 2mm Baffle opening 13x23mm Net weight 0.0025kg connections Solder joints IP protection class IP64 Temperature range –25... 70°C