1. Used by ear-hook, clip, necklace or Pocket type 2. Used by left or right ear-hoop and Clip type 3. Enjoy Hi-Fi sound quality 4. 7 Function keys (separated accept/play/power on-off) 5. Easy to use by one fingertip only control (accept/volume +,-) 6. Full-Flexible ear-hook, suitable with ear-ergonomic 7. None Earplug design, Easily keep headset clean 8. High Microphone sensitivity (clear talking ) 9. Supported Headset/Handfree/A2DP/AVRCP profiles 10. Stereo music by earphone Jack 11. Power On/Off by slide key (Blue LED indicator) 12. Charging (Green LED indicator) 13. compatible SKYPE use SPECIFICATIONS: * Standards Compliant: Bluetooth TM v.1.2 class2 * Bluetooth Chipset: Broadcom Zeevo 4301(Hi-Fi sound quality) * Operation range: 10 meters up to 15 meters (open area) * Music playing time: Up to 2.5 hours * Talking time: Up to 3 hours * Standby time: Up to 40 hours * Dimensions: 76(L) x 36(W) x 15(H)mm * Weight: 19g * Microphone sensitivity: -46dBm * External stereo earphone: Hi-End sound effects Accessories: 1. BHS-636 headset x1 2. Hi-End quality earphone x1 3. Flexiblely Ear-hook x1 3. clothes Clip x1 4. Headset-clip for necklace x1 5. Necklace x1 6. Flannelet bag x1 7. mini-USB charger cable x1 8. Manual x1 9. DC Adapter x1 (optional)