... Dual-frequency: 50 and 200 KHz2) 5.6-inch TFT LCD display with 8-color or multi-level amber presentation ... feet, 150fathoms, 200 passi/braza)(5) Zoom RangeTimes 2, 3, 4 and 5 ranges(6) Bottom Lock Expansion Range5/10meters ... Advance SpeedLines/TX: Freeze, 1/8, 1/4, 1/2, 1/1, 2/1(11) TX Frequency Output power50 and 200kHz ... 40, 80, 150, 300Pulse-Length(ms) 0.2, 0.2, 0.2, 0.4, 0.8, 1.5, 3.0TX Rate(pulse ...