Note:these are the package we can provide,Bag is for free,if you need the Box,you need to pay extra fee for it,so please contact us if you want a box. Note:these are the package we can provide,Bag is for free,if you need the Box,you need to pay extra fee for it,so please contact us if you want a box. 1.Enjoy stereo music wirelely2.Unique foldable design make it portable3.Remote hands free two-way chat4.HI-FI, CD sound quality5.Remote control to add further mobility6.High-sensitive, multi -directional speaker for virtual surround sound7.Supporting device: cellphone with Bluetooth function, iphone, Notebook, ipad etc8.Operating Distance: 10mm without obstruction like building or magnetic field9.Best Choice for listening music, watching movie, chatting online etc.10.With SD card slot,a small SD card is enough for enjou music any time any where. Version V4.0 Frequency 2.40GHz-2.48GHz Power 4 dBm, cla 2 Effective range 10M Sensitivity -84dBm / 0.1% BER talking speed 3M bps (asynchronous) 433.0 Kbps (synchronous) Frequency response 20 Hz - 20 KHz S/N rate 70 dB Distortion 0.10% Speaker size 40mm support A2DP 1.2, AVRCP 1.0, HSP, HSF 1.5 Voltage 3.7VDC (built-in 400MAH rechargeable battery) playing time 6hour standby time 250hour charge time 2-2.5 hour current 40 mA operate temperature -4 ~ +131F(-20 ~ +55C) package include:1 * Bluetooh Headset (color depend on customer\'s choose in the order)1 * USB Cable1 * User ManualFAQ Zzone:1.How to charge this headset?Connect your computer and headphone with the USB cable.2.How to start the headset and listen the music on the computer?Please be sure your computer have a bluetooth function and turn on the bluetooth, then pre headphone's ON/OFF key and you will see the blue light blinking and get ready to pair, search and pair until connected. Use your computer to start music and enjoy it with the headset.3. How to operate the bluetooth headphone with mobile phone?a.Turn on bluetooth on mobile phone,pre headphone's ON/OFF key and you will see the blue light blinking and get ready to pair, search and pair until connected.b. If someone call you, you just need pre the Hang up/Pause button, and you can chat with your friend on the phone. Finished your talking, you just need pre the Hang up/Pause button, and you can continue your music.4.How to use the MP3 function?Just pre the MEQ button on the headset it will change to MP3 situation, and then insert the SD card into the slot, music will play directly.(we don\'t provide SD card)