Metrotech 9890DLXT Specifications | Manualzz Left/Right Guidance™ Included Real-Time Continuous Gain Adjustment™ Included Manual Gain/Peak Mode Included 9890XT SFL2Dx User Handbook Metrotech Eng vD 20071213. Manufacturer Vivax-Metrotech; Description Not Available; Save File ? Download Datasheet. Manual Gain/Peak Mode: Included Current Measurement: Included Backlighting: Included Battery Type: Six AA Cells Battery Life: 30 hours continuous useMetrotech 9800 XT Series is the only advanced locator available with both Real-Time Continuous Gain Adjustment™ and Manual Gain control.