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: BaoFeng PoFung GT-1 Dual Band Ham Two-Way Radio, BF-888S 2rd Gen Handheld Walkie Talkie Transceiver, with A Free Programming Cable (Support Win 10), 70cm UHF 400-470MHz, Yellow, 6 Pack
Product description: With ergonomic design, GT-1 feels like a cell phone - comfortable and convenient to carry with. It's simple but sturdy enough with outstanding Baofeng quality. No need to worry about children handling. With its small size, easy to carry feature, and stylish appearance, GT-1 is suitable for various wireless communication industries, and is deeply loved by outdoor sports enthusiasts. Besides, it can be widely applied in airports, hotels, large shopping center, entertainment venues, and other industries etc. Operation is simple and reliable. One knob for ON/OFF/Volume control, the other for channel switch. One PTT button for speaking. Auto scan makes it easy to find anyone. Clear verbal feedback could remind you whenever you turn on the radio with the current channel number, wherever you stop when selecting channels. A loud sound makes it audible even in a noisy condition. Talking Range * The maximum effective talking range is up to 5KM (3.1 Miles) from peak to valley. * Average distance is up to 3.6KM (2.3 Miles) in open area. * The range is up to 2KM (1.3 Miles) in downtown with skyscrapers. Functions *Frequency: 400-469.995MHz *16 channels *FM Function, FM 66-108MHz(RX) *1500mAh Li-ion battery *50 CTCSS/105 CDCSS *VOX Function *Voice Prompt *PC Programming *Emergency Alarm *Intelligent Charging *Battery Save *Low Voltage Alert *Time-out Timer *Flashlight Color: Yellow / Orange / Green (3 color is selectable) Package List 6x GT-1 6x 1500mAh Li-ion Battery 6x SMA-Female Antenna 6x Original Earpiece 6x Belt Clip 6x English Manual 6x Desktop Charger 6x Wrist Strap 1x Programming Cable (support win 10) Programming Software: goo.gl/xSaoSZ
Product feature: Smarter design than Beefing BF-888S. Optimized ergonomic design, feels excellent, convenient to carry. Much more sturdy and solid than Beefing BF-888S and Reeves H-777., GT-1's performance is much more stabile than Beefing BF-888S. Using industry-leading materials and technology, also with re-optimized design., GT-1's shell is made of imported PC material, excellent in sealing, elasticity, and pressure resistance; easily respond to salt fog, humidity, high temperatures and harsh environments., High quality accessories of GT-1, charger of GT-1 is upgraded. Antenna is much more stabile., 1500mAh lithium-ion batteries, with power saving function. Battery life is more durable and long lasting than other brands' and BF-888s walkie-talkies.
Product brand: BaoFeng
Target attributes: Number of Channels
Answer: attribute: number of channels
value: 16 channels
source: product description