Power supply mode: TYPE-C charging / built-in 18650/2600mAh Impedance: 50Ohm Gain: 20db (Max) Charging circuit: Built-in battery protection circuit to protect the battery from over-discharge and over-charge. Automatically disconnect when battery voltage is lower than 2.5v<br><br>Antenna loop size: 260mm/10.2 inch (inner diameter) Control Box: 107 x 65 x 26mm/4.2 x 2.6 x 1 inch Working frequency: 10KHz-159MHz Working temperature: -10℃ to +60℃ Working voltage: 5V/1A Material: Metal + Plastic colour: black<br><br>Package Contents: 1 x Antenna with Control Box 1 x BNC cable (5m/16.4ft) 1 x Power Cable (Type-c) 2 x output cables (BNC-3.5 x 1m/3.3ft; BNC-BNC x 1m/3.3ft) 1 adapter (BNC-SMA)<br><br>Only the above package content, other products are not included. Note: Light shooting 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.