The Skywatcher SynGuider telescope autoguider can guide an equatorial mount without having to use a PC or laptop. It increases productivity during astrophoto sessions and helps keep stars perfectly round during long exposure times. The SynGuider is equipped with a hand control box and cables as well as a battery pack. It requires 4 D-size 1.5V batteries or alternatively a 6-12V power supply (lower voltage preferred) with 200 – 250 mA and 2.1 mm plug with + inside. Some Sky-Watcher SynGuider equipment details: 1. Stand-alone guiding – no computer required 2. Aptina CMOS sensor MT9V034C12STM (4.51 x 2.88 mm) 3. Number of pixels 752 x 480 4. Real-time image display 5. Standard ST- 4 Autoguider connection 6. T2 and 1.25″ telescope connection 7. User upgradeable firmware 8. Exposure times: 1, 2, 4, 8, 16, 32, 64, 128, 256, 1024, 2048, 4096 msec. Scope of delivery: Hand control box with chip cable battery pack! Power supply and batteries are not included!