Maintenance should be carried out at least twice a year, and should consist of the following measures:
Wipe the exterior surfaces of metal and plastic parts off dust and dirt with a cotton cloth. To avoid damage to the paint coating, do not use chemically active substances, solvents, etc.
Clean the electric terminals of the Battery Pack and riflescope's battery slot using a grease-free organic solvent.
Check lenses of objective, eyepiece and rangefinder. If necessary, remove the particles of dust and sand (preferably without touching the lens). Clean external surfaces of the lenses with means especially designed for the purpose.
Always store the riflescope in its carrying case in a dry, well-ventilated space. For prolonged storage, remove the batteries.