Model number: wms-8242T11 Product Specifications/Features :   FEATURE: ◆ UHF 800MHz band PLL frequency synthesized ◆ 96 applied channels with 300KHz channel space ◆ Dual tune true diversity receiver ◆ Twice mixer superheterodune circuit for high sensitivity ◆ Excellent SAW filter for RF and IF circuit ◆ Manufactured by SMT components and technics ◆ AA size batteries for microphone, supply time up to 10~30h ◆ Dual DC-DC step up circuit design for microphone ◆ Up to 300 meter operation distance in perfect environment SPECIFICATIONS: Frequency range：730~950MHz Selectable channels：96 Oscillation mode：PLL synthesized Frequency stability：?0ppm Receive mode：Superheterodyne Diversity type：Dual tune true diversity Input sensitivity：-90dBm Audio response：40~20000Hz T.H.D. at 1kHz：≤0.5% Signal to Noise Ratio：≥110dB Audio output：Balanced and Unbalanced RF power：10~50mW Modulation mode：FM Battery requirement：2?.5V AA size