Product info as advertised: Type: German equatorial/theodolite Reducer: RA: 17-100 DEC: 14-100 Transmission method: motor shaft direct drive harmonic Load: 15kg (without counterweight) 20 kg (with optional counterweight) Weight: 3.7kg (including dovetail groove) Material: AL6061, Steel, Brass, Plastic Surface treatment: anodizing, blackening, rust prevention Motor: high-precision low cogging torque servo motor Brake protection: RA axis electromagnetic brake Adjustments: ALT: 0-90 ° AZ:+/-8 ° Control system: OnStep Handle: Wired/Wireless remote control (Lidian) Communication protocol: ASCOM/NDILX 200 Communication interface: USB-C Guide Star Interface: ST4 (via USB-C) Wireless interface: Bluetooth WIFI Power supply: 12V 5A 5.5 * 21mm Power: standby: 0.3A GOTO: 1-2A Protection: Surge & Overcurrent Protection