The ATH-ANC40BT QuietPoint wireless in-ear headphones combine Audio-Technica's proprietary active noise-canceling technology with Bluetooth wireless technology to give you greater freedom and listening pleasure in areas of high ambient noise. The wireless headphones reduce that distracting background noise by up to 90% while the 13.5 mm drivers deliver superior sound reproduction. The Bluetooth functionality, coupled with an in-line mic and controls, lets you operate hands-free, wirelessly answering/ending calls, controlling music playback and adjusting volume on Bluetooth enabled devices. The headphones pair with up to eight Bluetooth enabled devices, and can be connected with two of those devices simultaneously, allowing you to shift seamlessly between your phone and tablet, phone and laptop or any other pair of Bluetooth enabled devices. The ATH-ANC40BT headphones also employ aptX sound-improvement technology, specifically created to yield the best-possible audio performance over Bluetooth transmission. Product Type: Headset - wireless - Bluetooth Recommended Use: Portable electronics Headphones Form Factor: In-ear - behind-the-neck mount Connectivity Technology: Wireless - Bluetooth Headphones Technology: Dynamic Radio Frequency Range: 2.402 - 2.480GHz Bluetooth Version: Bluetooth 3.0 Sound Output Mode: Stereo Audio Specifications: Frequency Response 20 - 24000 Hz Max Input Power: 10 mW Active Noise Canceling: Yes Microphone Technology: Condenser Manufacturer Warranty: 2 years warranty Product Type: Headset - Bluetooth Weight: 0.88 oz Recommended Use: Portable electronics Headphones Form Factor: In-ear - behind-the-neck mount Headphones Technology: Dynamic Connectivity Technology: Wireless - Bluetooth Available Microphone: Yes Bluetooth Version: Bluetooth 3.0 Bluetooth Profiles: Hands Free Profile (HFP), Headset Profile (HSP), Advanced Audio Distribution Profile (A2DP), Audio/Video Remote Control Profile (AVRCP) Sound Output Mode: Stereo Active Noise Canceling: Yes Frequency Response: 20 - 24000 Hz Max Input Power: 10 mW Diaphragm: 0.5 in Microphone Technology: Condenser Sensitivity: -42 dBV/Pascal Frequency Response: 70 - 8000 Hz Audio Input Details: Omni-directional - 70 - 8000 Hz Radio Frequency Range: 2.402 - 2.480GHz Modulation Type: FHSS Transmission Range: 33 ft Cables Included: USB charge cable - 3.3 ft Included Accessories: Carrying pouch, airplane adapter, 4 pairs of ear tips (supersmall, small, medium, large) Battery: Headset battery rechargeable - lithium polymer Run Time (Up To): 13 hour(s) Standby Time: 100 hours Recharge Time: 3 hour(s) Service & Support: 2 years warranty Service & Support Details: Limited warranty - parts and labor - 2 years