Specifications: 01. I am a new product. I am a bluetooth wireless speaker. 02. I can be as a mobile power bank. My capacity can charge your mobile phone. 03. I support Micro SD card, and Up to 32GB. 04. I has FM function. (FM function will better when i am plug in audio cable.) 05. I support hand-free when answer calling (with MIC). 06. I can play music in usb disk directly. 07. I can contact any drives that aux available by aux in cable. Type: Mini Bluetooth Speaker Battery Capacity: 1800mAH Li-ion Battery Bluetooth Version: 4.0 Transission Range: 10m Music Play: 8 Hours (Middle Volume) Frequency Range: 100hz-16khz Voltage: 3.7V SNR: ≥85db Standby Time: ≥90 hours Speakers: Dual-speaker Stereo Size: 20.5cm x 6.3cmx 4.3cm/8.07" x 2.48" x 1.69" (Approx.) Notes: Due to differences in lighting and screen settings, the color of the project may be slightly different from the picture. Due to different manual measurements, allow for slight size differences. Package Includes: 1 x Mini Wireless Bluetooth Speaker (Audio Cable and Charging Cable are Included. without TF Card)