• World class noise cancellation makes quiet sound quieter and music sound better. Connectivity Technology: Wireless
• Volume optimized EQ for balanced audio performance at any volume
• Wireless convenience, with easy Bluetooth and NFC pairing aided by voice prompts
• 20 hour battery life per charge; up to 40 hours in wired mode
• Noise rejecting dual microphone system for clear calls even in windy environments

Looks and appears in used condition. Parts of the ear covers are torn and worn. Has been powered on and connected via bluetooth with no further testing. NO CORDS INCLUDED. Unsure if these are Series 1 or 2; look like series 1.