Minelab PRO-Sonic Wireless Audio System Untether your search with clear wireless audio with virtually no time delay. The PRO-SONIC module works with all Minelab detector models to provide convenient, dependable wireless detection without interference from other devices. The PRO-SONIC works with all Minelab detector models to provide convenient, dependable wireless detection without interference from other devices. WIRELESS OPERATION: Low-power (mW) radio waves relay detection signals in real-time to a built-in speaker that easily clips to the detector, backpack or clothing. EXPANSIVE RANGE: The PRO-SONIC picks up transmitted audio from distances up to 32 feet (10 M). ADJUSTABLE VOLUME: Adjustable setting ensures you hear even slight detection signals with full clarity. HEADPHONE COMPATIBLE: Headphones with a ¼” can be used by plugging into the PRO-SONIC’s built in headphone connection jack. Technical Specifications Radio frequency range 2.402 – 2.480 Ghz Wireless range ≤10 m / 32 ft Operating time Tx Module: 10 hours | Rx Module: 16 hours Stand-by time Tx Module: 50 days | Rx Module: 100 days RF transmission power 0 – +8dBm Audio amplifier power 3 W Audio distortion