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: Bluetooth Headphones, Monstercube Hammer In-ear Bluetooth Sports Earbuds, Wireless Sweatproof Stereo Headsets with Microphone for iphone 6s 6s plus, G
Product description: Specification: Bluetooth name: RW-01 Bluetooth version: CSR8640 V4.0 Operating distance: Up to 10m (free space) Bluetooth profiles: A2DP, AVRCP, HSP, HFP Standby time: Up to 180hrs Talk/music playtime: Approximately 4 - 6 hours Charging time: Approximately 2 hours FAQ: Q:What functions does the buttons of the bluetooth headphone? A:1.Press the "" button 3 seconds to turn on the headphone, the blue indicator light flashes. The voice prompt "power on" 2.Press the "" button 3 seconds to turn off the headphone, the red indicator light flashes. The voice prompt "power off" 3.Press the "" button to take / hang up a call 4.Press the "" button 2 seconds to reject a call 5.Keep pressing "+" or "-" to increase / decrease the volume 6.Press "+" or "-" to switch the tracks Q:Is it suitable for the different size of the ear canals? A:Yes,there are three pairs(Small,Medium,Large ) of different ear-caps to adjust for comfort. Q:Could the bluetooth headset be automatic shutdown? A:Yes.Its losing connection or standby exceed 10 minutes will be automatic shutdown. Q:What bluetooth devices is it compatible? A:It is compatible with iPhone 6 Plus,6,5S 5C 5 4S 4, iPod,iPad, Samsung Galaxy S5, S4, S3,S2,Note 3, Note 2, LG,Most Android Smart Phones,PC Laptop and other Bluetooth-enabled devices,except the phone dont have bluetooth function. What's In the Package: 1* Monstercube Hammer Bluetooth Headphones 4* Ear Hooks 6* Ear-caps 1* USB cord 1* User Manual
Product feature: Headphones with Bluetooth 4.0 technology, Fast Bluetooth Pairing, Lower Power Consumption and Clear Stereo Sound., Portable and Lightweight Bluetooth Earbuds, Unique Flexible Design and Built-in Earhook Custom Earbuds ensure you to get perfect fit and remain stable in your ear., Wireless Bluetooth Headphones with Sweatproof, Durable Design, up to 5 hours of talk/playing time and 180 hours standby time., Bluetooth Stereo Headset Built-in Microphone with CVC6.0 noise cancellation technology,ensure Hi-Fi Stereo Earbuds with Strong Sound and Strong Signal. Let you get high quality and clear voice even in noisy environment like inside a gym and running/cycling., Easy to use Bluetooth Phone Headphones, control volume, select songs and receive phone calls via the buttons on the interfaces. Warm Voice Notice When There is an Incoming Call or Low Battery.
Product brand: Monstercube
Target attributes: Wireless Type
Answer: attribute: wireless type
value: bluetooth
source: product feature
attribute: wireless type
value: bluetooth
source: product description
attribute: wireless type
value: bluetooth
source: product title