Model Number:0705089 Item Type:Ear Care Item name:DTEC-30265-000 Category:Audio Products Family:Speakers Frequency Range:200Hz ~ 6.205kHz Impedance:22 Ohm Sound Pressure Level:113.5dB Size / Dimension:7.87mm L x 4.09mm W x 5.59mm H Moisture Sensitivity Level (MSL):1 (Unlimited) Notice : Please wire touch unit contacts for test before install it. Replacements are not available once drivers been soldered. Knowles TEC Series Balanced Armature Speakers Knowles TEC Series Balanced Armature Speakers are intended for use in high power hearing aids and combine output comparable to the larger BK receiver in an ultra-thin package. They are a similar size to an EF receiver and have a medium DCR to impedance ratio. The TEC Series operating sensitivity will not vary more than +1/-3dB from -17C to 63C. DTEC Series Balanced Armature Speakers (7.87 x 4.09 x 5.59mm) combine two TEC speakers with a single round port. Case size is equivalent to BK/EF. DTEC provides increased output and reduced vibration compared to a single speaker. Features Dual elements with single sound port Increased output Reduced vibration Enable hi-fi designs Spesifics: Manufacturer Part Number:DTEC-30265-000 Category :Audio Products Family:Speakers Frequency Range:200Hz ~ 6.205kHz Impedance:22 Ohm Sound Pressure Level :113.5dB Height :5.59mm Size / Dimension:7.87mm L x 4.09mm W Moisture Sensitivity Level (MSL):1 (Unlimited)