Ebay offers Harman Kardon FLY TWS True Wireless Bluetooth In-ear Headphones, Black for $49.99 (reg. $149.95) free shipping.

Product Description:
Replaceable Ear Tips, Noise Isolation, Ambient Sound Mode, HD Voice, Built-In On/Off Switch, Stereo, Wireless Charging, Channel Monitor, Water-Resistant, Call functions, Rechargeable Battery, Noise Cancellation, Extra Bass, Built-in Microphone