Below are the specs: Specifications: - Drive form: motor direct drive harmonic- Front stage transmission error: none - Weight: 5.0kg - Non-CW load: 22kg or 47Nm - Load with CW: 30kg (3kg counterweight at 30cm from RA axis) - RA axle wheelbase: 71mm - RA axis motor: 57 stepper motor- RA Axis Harmonics: 20-160 Standard Edition - DEC axle wheelbase: 101.5mm - DEC axis motor: 35 stepper motor - DEC Axis Harmonics: 17-100 Standard Edition - Maximum goto speed: 3.5°/s 840X - Control system: Onstep external - Latitude adjustment: 0~55° - Heavy hammer seat: standard - Theodolite mode: handle replacement - Power off anti-dump: stall lock - Handle: Integrated hand control box V2 - Guide accuracy: 0.6~1.1 - PE: about ±20" - PE cycle: about 270s - Dovetail groove: 60° 74 wide - 20~55°Elevation angle single-turn adjustment: 0.91°~0.97°- 0~30°Elevation angle single-turn adjustment: 0.9°~1.25° - Bluetooth: Support Bluetooth 4.2- WIFI: Support (Max 20M) - USB: standard USB2.0 type A drive-free direct connection- ASCOM: Support - IND: support- ZWOAIR: Support - Multi-star calibration: support- Auxiliary epipolar axis: support - Star Gallery: Comes with 20000+, with star catalogue including M, NGC, and IC- Power supply: DC12~24V at least 2A