The QL series will launch quail or barn pigeon-size game birds for both pointers and flushing dogs. The transmitter can be programmed to operate as many as six launcher units. AIRFLOW - Excellent air flow for scent distribution. ADJUSTABLE STRENGTH - Spring tension allows adjustment of throwing height. STATE-OF-THE-ART ELECTRONICS - The remote release system has the same quality digital electronics found on the Dogtra training collars. The transmitter and receiver feature Ni-MH rechargeable batteries. OTHER FEATURES - Half-mile range. Launchers come with a locating horn on the receiver to help you locate your launcher in the field. QL - 8.6" x 4.5" x 4.3" / PL - 13.2" x 6.9" x 6.9". Can be purchased with or without the electronic remote release.