RDG-08B   Type:  Dynamic Total harmonic distortion:  max. 5 % @ 1 kHz Impedance:  32+/-4,8 ohm @ 1 kHz, 0,18 Vrms Rated input:  1 mW (0,18 Vrms) Resonance frequency: 580+/-10 % Hz Dimension:  Diameter 8,1 mm, H 2,4 mm  Weight: 0,5 g Sound pressure level (SPL): 113+/-3 dB @ 1 kHz, 0,18 Vrms (= 1 mW)             Download datasheet        SCB-13A-LS2   SPL speaker:  85+/-3 dB SPL receiver:  122,5+/-3 dB Impedance:  8 ohm Rated input:  0,15 W Resonance frequency: 810 Hz Operating temperature: -30°C to +70°C Storage temperature: -40°C to +85°C Dimension: Diameter 13 mm, H 2,5 mm             Download datasheet