KST-900 Stereo Bluetooth Headset Sports Wireless Wired Line in Headphone Earphone Headband with Mic Handsfree for Mobile Phone PC Tablet <br><br><strong>Features:</strong> <br>Bluetooth + stereo headset combo. <br>Wireless headphone connect with phone，PC/Notebook, X Box and soAllow you to answer or reject phone calls anytime and anywhere. <br>Good quality, foldable design and adjustable length hinges, very comfortable to wear and easy to carry. <br>Best choice for listening music, watching movie, chatting online etc. <br>Wireless and adjustable length design, very portable and convenient <br>Also can plug audio cable (not included) to connect your PC. <br>  <br><strong>Specifications:</strong> <br>Type: Stereo headphone with Mic <br>Model: KST-900 <br>Color: Black, Gold, Red (Optional) <br>Bluetooth version: 4.1 <br>Operation distance: 10m   <br>Sensitivity: 102dB+ / - 5dB <br>frequency response 20HZ-20 KHz <br>Rechargeable lithium battery: 260mAh <br>Charge time: 1.5-2hrs <br>Charge port: Micro Usb <br>Speaker diameter 40MM <br>Resistance: 32ohm <br>Plug type: 3.5mm   <br>Talk time: 6 hours <br>Standby time: 120 hours <br>Music playback: 8 hours <br>Item weight: Approx.135g / 4.8oz <br>Package size: Approx.19.7 * 22 * 4.7cm / 7.8 * 8.7 * 1.9in  <br>Total weight: Approx.271g / 9.5oz <br><br><strong>Package included：</strong> <br>1 * Headset <br>1 * USB Cable   <br>1 * Audio Cable  <br>1 * User Mannual (English)