From RC Helicopter Wiki
The Futaba GY520 gyro has been unveiled at the 2008 edition of the iHobbyExpo and has the following features:
- full programmability via USB / computer interface or via direct gyro programming using the built in LED;
- built on the MMS instead of SMM which allows the smaller size;
- performance is stated to exceed that of the 611 and Spartan;
- weight is about 10g.
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