This product is a high linearity, ultra-low noise gain block amplifier Power supply: 5V 70ma Frequency range: 100K-6GHz Ultra-low noise , 0.4 dB at 1.95 GHz High gain at 1.95 GHz, 20 dB gain High linearity, +35 dBm output IP3 High input power robustness, +22 dBm CW Stable performance 50 ohm input/output Connector: SMA female Size: 45 x 45 x 18.5mm (excluding joints) Weight: 46g Battery type: 3.7V 300mAH battery color:As shown Material:Metal Package Contents: 1 x amplifier(with battery) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.