"Packing list: 
1 x Bluetooth speaker 
1 x USB line 
1 x Audio line 
1 x English instruction 
1 x Shoulder strap
Portable Wireless Bluetooth Speaker Waterproof Rechargeable Subwoofer Outdoor Music Player
Features:
1. 10000 MAH super battery capacity, 15 hours music playback, enjoy music anytime, anywhere
2. Support TF card function, Max 32GB
3. Transmission distance up to 10M
4. Support micro USB, 3.5MM AUX,TF card, USB2.0 ports
5. Low power consumption. Loudspeaker Output 40W
6. Support voice calls function 
7. Excellent for outdoor sport and exercise and travel and so on 

Description:
Bluetooth version: V4.1
Bluetooth Name: XTREME
Battery capacity: 10000mAh (built in)
Endurance time: 15 hours
Charging time: 3--5 hours
Number of speakers: 2
Speaker: 20W * 2
Sound track: 2.0
Frequency range: 2.4GHZ
Input sensitivity: 400mV
Wireless transmission distance: 10 meters
The degree of separation:  90dB
Frequency response: 70~20KHz (+-3dB)
Signal-to-noise ratio:   80dB
Playback formats: WAV, MP3, WMA
TF maximum support: 32G
Mode of operation: press key
USB line length: 50CM
Input voltage: DC 5V 2A
Certificate type: CE
Interface type: micro USB / AUX / TF card socket / 2.0 USB 
Material: Rubber + woven fabric
Size: length 21.5CM, width 9.7CM, height 9.4CM"