A:New Original Xiaomi Mi Bluetooth Speaker 2 Square Box
Stereo Portable High Definition Sound Quality
Bluetooth 4.2 Support AUX In

B:Original Xiaomi Bluetooth 4.0 Speaker Wireless
Portable Stereo Mini SoundBox Square Box
loudspeaker for Smartphone Computer

Main Features

Bluetooth version: V4.0+EDR
Effective distance:10M
OutPut:1.8W*2
Frequency range:2.4GHZ-2.48hz
Support A2DP,AVRCP,HEP protocols
Call time:about 10 hours
Music playback time:about 10 hours

C:Xiaomi Mi Bluetooth Speaker Portable Wireless
Mini Speaker Micro SD Card Aux in BT4.0
for IPhone and Android Phones

Feature:

1. Double Channels NdFeB Hron,Aluminum alloy shell
2. Support Aux-in audio cable,Bluetooth 4.0
3. Support up to 32GB Micro SD card.
4. Built-in microphone enable handsfree calls.
5. High quality Avnera AV3102 chip, provides high quality sound.

Specification:

Size: 168 x 24.5 x 58mm
Weight: 270g
Color: Gold/Blue/Pink
Maximum output power: 3W x 2(4ohm, THD<1%)
Loudspeaker: Φ36mm, Driver x 2
Sound track: 2.0
Bluetooth: 4.0
Microphone: HF Microphone
Frequency response (-10dB): 85Hz-20KHz
Battery capacity: 1500mAh
Battery voltage: 3.8V
Charging time: 2.5h
Battery Life: 8 hours (65dBA / 1m)
USB mains input: 5V 2A

Package content:

Bluetooth speaker*1
Portable bag*1
Manual*1