Description Xiaomi Mini Square Box Bluetooth Speaker built-in 1200mah lithium battery， charging once can support about 10 hours continuous playback， square box shape plus with white ABS material panel+ aluminum blasted side box，give you perfect hand feeling ，what is more ，better compatibility， more power-saving， bluetooth effective range can up to 10 meters.  Square box shape plus with white ABS material panel+ aluminum blasted side box， simple， elegant， generous， highlighting the texture. Support Bluetooth 4.0 protocol， better compatibility， more power-saving， Bluetooth effective range can up to 10 meters(Note: the charging line is not included in the speaker package) Specifications Primary FeaturesSupports: Bluetooth， Loudspeaker Compatible With: Mobile Phone， Laptop Connection: Wireless Interface: USB2.0 Audio Source: Electronic Products with USB port Material: Metal， ABS  Technical ParametersBluetooth Version: V4.0+EDR Protocol : A2DP， AVRCP Transmission Distance: W/O obstacles 10m Power Output: 2.5W x 2 Speaker Battery Capacity: 1200mAh S/N: 80dBOther ParametersPower Source: USB Working Voltage: 5V 0.5A Dimension and WeightProduct Weight: 0.227 kg Package Weight: 0.300 kg Product Size (L x W x H): 12.4 x 6.0 x 2.7 cmPackage Size (L x W x H): 17.0 x 8.0 x 4.5 cm Warranty:  3 months for manufacturing defects onlyWarranty Type: Local supplier warranty