This is the 18A Electronic Speed Control for the Flyzone Calypso Glider. FEATURES: Replaces non-functioning or crash damaged ESCs from the Calypso INCLUDES: 18A ESC with preinstalled Motor, Battery, and Receiver Connecctors SPECS: Dimensions: 1.02 x 1.9 x 0.35" (26 x 48 x 9mm) Weight: 1.1oz (32g) jxs 09/06/12 ir/jxs