1. Power supply: 5V 70ma; 2. Frequency range: 100K-6GHz; Ultra-low noise figure, 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 ruggedness, +22 dBm CW; Stable performance; 50 ohm input/output; 3. Connector: SMA female; 4. A 3.7V 200mAh battery can be installed; Size: 45 x 45 x 18.5mm (excluding connectors); Note: The battery-less version requires Bias-Tee bias power supply. Some devices have their own bias power supply function, such as: 1A, for ONE, etc. Due to different batches, the appearance, color and printed words of the product , which not affect the use. Material: Metal colour: gold Package Contents: 2 x Amplifier 2 x USB Cable 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.