Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: KKmoon USB RC Model Flight Simulator For Heli Airplane Glider (6CH,3D)
Product description: Features: PC SystemWINOWSXP.95.97.98.2000.VISTA Omnibearing 3D tridimensional graphic landscape Dimensional sound effect 6 Channels for achieving to multiple different operations:elevating rudder,acceleration and deceleration,flip hpeizontal, flip vertical, azimuth bearing control... The simulator is added a new function of having control of V-tail Present latest FMS CD simulator software Support interactive keyboard operations Minimum system requirements: Pentium III or AMD Athlon 64 compatible processor with at least 800MHz 1GB free HDD memory space CD-ROM drive DirectX version 9.0 application interface Graphic card with 64MB bus width 3D sound card Dimensions: 190*170*52mm USB cable length: 1.2m Unit net weight: 485g Unit packing gross weight: 685g Note:Please practice simulation flight first on the computer before operating the electronic helicopters or airplanes in order to reduce the damage! Package included: 1 x USB Flight Simulator Transmitter Model 2 1 x FMS CD simulator software 1 x User Manual
Product feature: Omnibearing 3D tridimensional graphic landscape. Dimensional sound effect, 6 Channels for achieving to multiple different operations:elevating rudder,acceleration and deceleration,flip hpeizontal, flip vertical, azimuth bearing control..., The simulator is added a new function of having control of V-tail, Present latest FMS CD simulator software, Pentium III or AMD Athlon 64 compatible processor with at least 800MHz
Product price: $5.24
Product brand: KKmoon
Target attributes: Number of Channels
Answer: attribute: number of channels
value: 6 channels
source: product feature
attribute: number of channels
value: 6ch
source: product title
attribute: number of channels
value: 6 channels
source: product description