Freebyrd Air Wireless Bluetooth Headphones with Active Noise Cancellation Earphones Features Enhanced Inline Microphone - Sweat-Proof Available in Black,white or Red Stereo Headsets/Earbuds (Black) Premium Sound Quality. Freebyrd Air Wireless Bluetooth Headphones are Designed with High Definition Sound Quality to Optimize Your Music Experience. Innovative Features. Freebyd Inc. Products are Renowned for Innovation and Quality  Multipoint Bluetooth Connection  Charge Time: 1-2 Hours  Play Time: 4-6 Hours  Standby: 120-150 Hours  Answering a Call/ Ending a Call/Rejecting a Call/Last Number Redial  Volume Control  Voice Prompt  Voice Answering  Includes: Freebyrd Air Wireless Headphones with Microphone, USB Power Adapter, Extra Earbuds, and Carrying Case Ideal Opti-Fitting Technology. A Unique Feature to the Freebyrd Air Edition is the Opti-Fitting Design. This Model is Specifically Designed for the Highest Intensity Athletes Around the Globe for a secure Unmovable Fit. The Opti-Fitting Technology has been put to the Test by the Most Active Sport Training. Lifetime Guarantee. Freebyrd Inc. Offers a Lifetime Warranty and all Products. We are Confident You will Enjoy Your Headset. If we do not meet your Satisfaction, you may Return product for a 100% Refund. Active Noise Cancellation. To Enhance Your Music Experience the Freebyrd Air Earphones Offer 3 Different Size Form Fitting Earbuds that will Activate the Noise Cancellation Feature.