The High Frequency Elliptical Coil, extremely sensitive and fully wireless coil compatible with the DEUS and ORX XP metal detectors; Uses the 10 Times faster wireless technology compared to Bluetooth low latency technology using the XP patented radio protocol system; Fully waterproof coil to detect up to 20ft underwater and battery life from 13 to 20 hours depending on which frequency and power is used (lithium battery); 3 main frequencies (14, 28 and 74kHz) plus the 7 wide offset choices, this coil offers you 21 different frequencies helping to adapt your machine to the soil characteristics and your desired target