Instruction: Parse the product information to locate the target attribute, and then provide the extracted value of the target attribute and its source in the output, specifying None if the attribute is not present.

Input:
Product title: Futaba GY520 Gyro with Heading Hold
Product description: Futaba Systems GY520 Helicopter Gyro w Heading Hold, FUTM0810, This is the Futaba GY520 Heading Hold Gyro. Ultra small and light weight gyro contained in one unit, no separate sensor and control unit.
Product feature: FEATURES: Ultra small and light weight gyro contained in one unit-no separate sensor and control unit Utilizes a high speed advanced PID, INCLUDES: Futaba GY520 Heading Hold Gyro, instruction manual, one each 13 (330mm) lead with red connectors and lead with black connectors, REQUIRES: Digital or analog servos
Product price: $139.99
Product brand: Futaba
Target attributes: Battery Type
Answer: attribute: battery type
value: None
source: None