DR.ÖTEK Metal Detector for Adults Professional, Pinpoint Metal Detector Waterproof Gold and Silver, Higher Accuracy, Bigger LCD Display, Strong Memory Mode, 10" IP68 Coil, New Advanced DSP Chip. 4.4 out of 5 stars. 5,107. 1K+ bought in past month. $147.99 $ 147. 99. List: $189.99 $189.99.