Instruction: First, identify the target attributes from the provided list. Then, scan the product title, description, feature, and brand to extract the values associated with each target attribute. Finally, create a list of dictionaries, each containing the extracted attribute, its corresponding value, and the source where it was found.

Input:
Product title: Sound Intone HD30 Stereo Lightweight Folding Headsets with Stretchable Headband for iPhone, All Android Smartphones, PC, Laptop, Mp3/mp4, Tablet Headphone (Blue)
Product description: Features: 1.Thick braided cord with a solid outer coating to ensure it doesn't tear.Soft leather earpads,ergonomic design, soft touch and good air permeability.stretchable headband 90 degree for comfortable wearing. 2.Folding compact design,Easy to carry and save spaces.Provides extra flexibility, portability, and durability. 3. Great sound quality and strong low bass, great noise-isolation.40mm magnetic driver units,feel the power of any dynamic sound. 4.With detachable 3.5mm audio cable.High tenacity eco-friendly plastic outer shell ensure safe for kids 5.In-built microphone with control button support calls and play or pause a song at the touch of a button. for all 3.5mm jack devices.,All Android smartphones,iPhone,PC,laptop,iPod,iPad,tablet earphones. Specifications: Driver Diameter:40mm Impedance32ohm15% Sensitivity:103dB3dB Frequency range:20-20000HZ Cable length:1.5m Microphone:yes Jack :3.5mm Hands-free microphone Package include: 1pcs headset 1pcs detachable cable 1pcs user manual 1pcs warranty card
Product feature: Comfort is the top priority - smooth and soft leather pad that greatly contribute to the HD30 comfortable kids headphones., Sound better enhanced!Thanks to the 40 mm magnetic driver units embedded inside the headphones for kids, which imparts brilliant clarity to the sound and strong low bass., Ergonomic design adjustable - flexible headband, can be stretched and rotated up to 90 degree for convenience,fits teenagers and adults ., Folding design and lightweight, more convenient for travel and on the move., Compatible with all 3.5mm jack devices ,let your kids enjoy what they like happily.
Product brand: Sound Intone
Target attributes: Connectivity
Answer: attribute: connectivity
value: None
source: None