VXP1356 Features: * Star tracker * 1/2 of celestial tracking rate * Solar tracking rate (solar time) and Lunar tracking rate (lunar time): Usable in both northern and southern hemispheres * Wheel gear 57.6mm diameter aluminum alloy axis with full-circle 144-tooth * Worm gear 9mm diameter high tension brass * Bearings two pieces * Drive pulse motor (stepper motor) * Optional accessory A dedicated polar axis scope for Polarie * Designed to not only be functional, but also to be compact and attractive * No visible screws and although, not waterproof, it is designed to function in most weather conditions * 1.5kg (3.3 lbs) Loading weight with use of Alkaline batteries * Polar sight hole About 8.9° field of view * Standard accessory: Compass * Electricity consumption DC.V.A (At a loading weight of 1.5kg 3.3 lbs) * Duration of operation About 4hours:At 20 C (68 F) degrees temperature Specifications: * Working voltage 2 x AA-size batteries: DC2.4 - 3.0V * External power supply: DC4.4 - 5.25V Dimensions: * Weight: 1.4 lbs. (without batteries)