Fangrui Product Details 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: 1 X Amplifier(with Battery) 1 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.