This is the first wireless headphone set by Bose, renowned audio pioneers for almost 50 years. While most headphones and earbuds simply relay sound, these use Bose's patented TriPort® technology to deliver clear highs and full lows, with active equalization for immersive sound. The wireless feature connects easily to Bluetooth devices, untethering listeners so they can wander up to 30 feet from the source. The headphones pair with up to two devices simultaneously, so users can enjoy media on an iPad while remaining connected to a smartphone. (The headsets automatically pause the media to take the call with the built-in microphone.) Cushioned, around-ear cups provide comfort for long listening sessions. Rechargeable Li-Ion battery provides seven hours of run time, and 200 hours of standby. Folds flat for storage in included carry bag. Includes audio cable for when Bluetooth isn't available. 7 1/2" H x 6" W x 1 1/2" D. (5 oz.)