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: BLU Tango Unlocked GSM Phone with Android OS 2.2, Wi-Fi, GPS Navigation, Bluetooth, and MicroSD Slot-International Version with Warranty (Black)
Product description: Your First ANDROID! The BLU Tango is the lowest cost Android device on the market, but is not short on features. With the latest edition of Android loaded and ready to go, the BLU Tango allows you to be your best, at work and play! The BLU Tango mobile is powered with a lot of interesting features including 2.8 inches of TFT resistive touchscreen and Qualcomm MSM7227 600 MHz processor. Preloaded with Android 2.2 operating system this BLU Tango mobile poses Wi-Fi connectivity. World of apps! The Android Market is waiting for you with over 100.000 apps to personalize your phone and add thousand of new features to make your phone look fresh everyday! The BLU Tango mobile also supports MP3, AAC, AAC+, eAAC+, AMR-NB, AMR-WB, MIDI audio file. The 1200 mAH Li-ion battery of this BLU Tango mobile provides up to 500 hours stanby and 12 hours of talktime for 2G as well as nearly 500 hours of standby and 6 hours of talktime for 3G.
Product feature: Android OS, v2.2 (Froyo) 3.15 MP Camera with 2048x1536 pixels and Video Recording; 2.8-inch TFT LCD display, This unlocked cell phone is compatible with GSM carriers like AT&T and T-Mobile. Not all carrier features may be supported., Unlocked Quad-Band GSM cell phone compatible with 850/900/1800/1900 MHz and 3G HSDPA 850/900 plus GPRS/EDGE capabilities, Access to Android Market (over 100.000 apps); Stereo FM radio with RDS; 3.5 mm audio jack, Talk time up to 12 hours - Standby up to 500 hs., This unlocked cell phone is compatible with GSM carriers like AT&T and T-Mobile. Not all carrier features may be supported., Unlocked Quad-Band GSM cell phone compatible with 850/900/1800/1900 MHz and 3G HSDPA 850/900 plus GPRS/EDGE capabilities, Android OS, v2.2 (Froyo) 3.15 MP Camera with 2048x1536 pixels and Video Recording;, Access to Android Market (over 100.000 apps); Stereo FM radio with RDS; 3.5 mm audio jack, Talk time up to 12 hours - Standby up to 500 hs.
Product brand: BLU
Target attributes: Weight
Answer: attribute: weight
value: None
source: None