8.33/25 kHz Ground to Air Radio with Class Leading 1500 mW Powerful Audio 8.33 kHz and 25 kHz channel spacing 1500 mW loud audio provides clear communications 6 W (PEP) /1.8 W (carrier) RF output power Built-in Bluetooth® for Hands-Free Operation* * Bluetooth operation depending on the transceiver version. Large capacity battery pack provides 17 hours* of long battery life * With BP-280. Typical operation with TX : RX : Standby = 5:5:90. (Bluetooth OFF, backlight OFF) Compact, waterproof durable body (IP67/54 and MIL-STD-810-G) LCD and key backlight for night time operation Compatible* with third-party aviation headsets * Optional headset adapter OPC-2401 required. Other features Auto Noise Limiter (ANL) for noise reduction Side Tone function Internal VOX capability 200 memory channels with names up to 8 characters BNC type antenna connector Supplied accessories BP-280 battery pack BC-213 rapid charger BC-123SA AC adapter FA-B02AR antenna MB-133 belt clip Hand strap