Lanzar HR6.2 Heritage 6.5-Inch Two-Way Coaxial Speakers (Discontinued by Manufacturer) Power ON/OFF/MUTE Power indicator Frequency Range: 160-270MHz Dynamic Range: 80dB Frequency Response: 100-10KHz Working Temperature: -10 -45 Power supply: 9V battery Works great with out wireless receivers, like the PWMA830, PWMA850, and the new PWMA100. Also works with the Peavey 18019490 Pro Comm(R) system, the Fender Passport Wireless System, and any wireless receiver that runs on 174.8 mHz. Requires one 9V battery. Battery life: 8-10 hours Sold as : Unit