Amazon offers the Willnorn Walker6 Wireless Active Noise Cancelling Bluetooth Headphones on sale for $34.30 plus via Coupon Code: "AXTWIOB7" (Exp Soon). Free shipping on orders over $49 or with Amazon Prime. You save about 50% off the list price. We don't often see both wireless & active noise cancellation on headphones under $50.

• Wireless Bluetooth headphones w/ Active Noise Cancelling
• Up to 20 ± 3db low-frequency noise reduction; built-in mic
  
• Featured high-end CSR Bluetooth 4.0 w/ A2DP & NFC pairing
  
• Up to 36 hours playback; included braided nylon audio cable