More Details:<br><br><br><br><br><br>Specification:Brand Name: ZEALOTModel Number: B17Bluetooth Version: 4.0 + EDRBattery Capacity: 600mAhSpeaker: 32&amp;Omega;Charging Voltage: DC 5VMusic Mode: Mp3Transmission Distance: &amp;le;10mWorking Voltage: 3.7VFrequency Response: 20Hz-20kHzOutput Power: 40mw max.SNR: 90dBDistortion: &amp;le;1%Talk Time: 8 hoursMusic Time: 8 hoursStandby Time: 300 hoursSize: 153*70*180mmEarbud Size: 70mmWeight: 170gMicrophone: Yes<br> Optional Color: Black， Blue， Red， White.  Features: 1.Can connect to two devices at the same time. 2. Suppot to TF card and FM radio. 3. AUX connection. You can connect to external headphone. 4. It can be foldable and easy to carry.  Package Included: 1 X ZEALOT B17 Headphone 1 X Charging Cable 1 X Manual