Ends at 10PM PT. Electronics.woot! has the TOZO NC9 Active Noise Cancelling Wireless Earbuds (Dark Brown or Khaki) for $30 with free shipping for Prime members or $6 shipping.  Sells for $40+ elsewhere.

These are good noise-cancelling headphones that last more than 6 hours per charge, while playing music continuously, peaking at 75dB(SPL).