More details from the review video as followed:



More Details:
Xiaomi Black Bluetooth Speaker
XIAOMI Bluetooth Speaker
Original Xiaomi 1200mAh Black Square Portable Wireless Bluetooth 4.0 Speaker
Original Xiaomi 1200mAh Black Square Portable Wireless Bluetooth 4.0 Speaker
Original Xiaomi 1200mAh Black Square Portable Wireless Bluetooth 4.0 Speaker
Original Xiaomi 1200mAh Black Square Portable Wireless Bluetooth 4.0 Speaker
Original Xiaomi 1200mAh Black Square Portable Wireless Bluetooth 4.0 Speaker
Specifications:

Basic Specification
 Brand Name  Xiaomi
 Compatible With  Most of Bluetooth mobile phone
 Bluetooth Version  4.0
 Effective Distance   10m
 Frequency Range  2.4GHz~2.48GHz
 Frequency Response  100Hz~20KHz
 Suport Audio Protocol  A2DP, AVRCP, HFP
 Outpot Power  1.8W X 2
 Music Playback Time  About 10 hours
 Impedance  4Ω
 Size  154.5 x 62 x 25.3mm
 Color   Black/White
Package Included: 
1 X Bluetooth Speaker
1 X Manual