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: AcTek Wireless Portable Bluetooth Speakers Mini Mobile Phone Speaker Home WiFi Cordless Stereo Sound System (Moondock-Blue)
Product feature: UNIQUE PHONE HOLDER DESIGN: our proprietary 2-in-1 design, bluetooth speaker with phone holder; save space for extra phone stand., 360CRYSTAL CLEAR SOUND: advanced DSP technology and 2 broad-frequency response speakers provide brilliant sound reproduction throughout your room; two precision acoustic drivers delivery excellent stereo sound and enhanced bass, producing a wide audio spectrum., ULTRA PORTABLE: weight under 10 ounces, dimension 6.6 x 6.2 x 5.1 inches; high capacity rechargeable 1000 mAh battery for up to 10 hours of playtime; plays and charges at the same time; so much better for travel, hiking outdoors and easy to fit in your backpack, baggage., CONNECT IN SECONDS: compatible with all bluetooth-enabled devices; non-bluetooth devices using included 3.5mm audio cable/AUX-IN jack; includes micro-USB charging cable; speaker reconnects automatically to the last device used., EASY TO OPERATE: equipped with smart buttons, which are highly sensitive by simple touch to switch on(touch for 3 seconds) and adjust the volume; instantly connect to your smartphone or tablet from up to 33 feet away.
Product brand: AcTek
Target attributes: Use
Answer: attribute: use
value: None
source: None