Observer SPM-100-T8 Speaker Mic for Tait TP8110 8115 8120 8135 8140 9300 9400. OBSERVER Series SPM-100 Series - Light Weight and smaller than the Trooper Series the Observer still puts out a good loud signal but is better suited for everyday users. The SPM-100 Observer is a lightweight, compact remote speaker microphone designed for use in light-duty applications. Each microphone features a high-quality electret condenser microphone element that produces excelled transmitted audio clarity. The SPM-100 is meant to be worn on the user's lapel, duty belt, or shoulder epaulet. It secures to the user's clothing by way of a large metal-reinforced clip which rotates 360 degrees. The SPM-100 features a powerful built-in speaker that should provide loud receive audio in all but the noisiest of environments. For additional privacy and security, use the Observer with an optional earphone (sold separately). Lightweight, small, remote speaker microphone. High-quality electret condenser-style microphone element that produces excellent transmit audio as well as a powerful speaker. For additional privacy and security, the SPM-100 series also has a built-in earphone jack, allowing operation of an optional remote earphone with a standard 3.5 mm plug such as our LOOKOUT, RECON or SCOUT. Spring loaded, metal reinforced clothing clip which can be rotated 360°. Durable polycarbonate housing for long product lifespan.