Description:Bluetooth version: V5.0Bluetooth Name: S518Battery capacity: 1500mAh (built in)Endurance time: 5 hoursCharging time: 1--2 hoursNumber of speakers: 1Speaker: 5WSound track: 2.0Frequency range: 2.4GHZInput sensitivity: 400mVWireless transmission distance: 10 metersThe degree of separation: 90dBFrequency response: 70~20KHz (+-3dB)Signal-to-noise ratio: 80dBPlayback formats: WAV, MP3, WMATF maximum support: 32G(not included)Mode of operation: press keyUSB line length: 50CMInput voltage: DC 5V 2AInterface type: micro USB / AUX / TF card socket / 2.0 USBColor: brown green, green white grid(optional)Material: Rubber + woven fabricSize: length 21.5CM, width 9.7CM, height 9.4CMFeatures:1. 1500MAH super battery capacity music playback enjoy music anytime, anywhere2. Support TF card function, Max 32GB(not included)3. Transmission distance up to 10M4. Support micro USB, 3.5MM AUX,TF card, USB2.0 ports5. Low power consumption. Loudspeaker Output 5W6. Support voice calls function7. Excellent for outdoor sport and exercise and travel and so on8.Color: Black, Grey, Red, Blue, GoldWhat we offerPortable Bluetooth Speaker*1USB Cable*1Audio Cable*1User Manual*12-year Warranty Quality Guarantee24 Hours Friendly Customer service and Email Support