1、FM WIRELESS TRANSMITTER ASSEMBLY: Water pipe detector has a built in FM wireless transmitter component that can transmit signals wirelessly to remote locations. 2、EQUIPPED WITH EXPANSION JACK: Leakage detection monitor is equipped with an expansion jack to allow external devices to perform additional functions. 3、4 SPEED ADJUSTMENT: Water pipe leakage detector uses four levels of adjustment to meet different conditions of use. 4、CLEAR SOUND QUALITY: Water pipe leakage monitor sound quality is clear, superior performance, strong sensitivity, imported components. 5、FULL METAL BODY: Pipe leakage detector with a full metal body, fine workmanship, for precise high end professional instruments and equipment. Item Type: Water Pipe Leakage Detector Material: Alloy Size: Approx. 7.4x7.3x2.6cm / 2.91x2.87x1.02in Battery (Shipped With Built In Battery): Lithium Battery, Capacity 800mah Measurement Objects: Fire Pipes, Household Pipes, Heating Pipes, Floor Heating Pipes, Water Pipes, Car Rattles Four Sound Selection: A Level (200Hz), B Level (800Hz), C Level (1200Hz), D Level (Probe Tube) Probe Sensitivity: -70db Maximum Sound Amplification: 20,000 Times Pickup Parameters: Charging Time: 3-5 Hours Battery: Lithium Battery, 220mAh (Shipped With Built In Battery) Sound Collection Length: About 5-6 Hours, Current About 40 MA Duration Of Continuous Playback: About 6-7 Hours, Current About 35 MA Support 32G Small Memory Card (Shipped Without Small Memory Card) Gross Weight: 720g/25.4oz 1 x Host 1 x Probe Head 1 x Probe 1 x Plug 1 x Earphone 2 x Instruction Manual 1 x Storage Box 1 x Pickup 1 x Accessory