at first I took sq 320. later I changed it to sq 420. The RDs are identical, except for the design of the displays and the color of the buttons. justifies its money! there are no competitors in the price category! (from brands, not Chinese names) 520 model is identical in functionality + voice notification. For me, this is a minus (quickly get bored). But the substantial +520k is a loud speaker.
🎧 Alpha Pilot Headset Flight Bag (Black) – Streamlined Flyer Solution
8 Review
🔍 MANN-FILTER W 811/80: The Optimal Oil Filter for Enhanced Engine Performance
11 Review
🎧 FARO Aviation Headset Converter: Low to High Impedance Adapter for General Aviation (GA) and Military Headsets
9 Review
🛩️ Stratux ADS-B Dual Band Receiver: Advanced Aviation Weather and Traffic System with WAAS GPS, AHRS, Battery Pack, Suction Mount, Antennas, SDR
9 Review