(Open Box) Audio-Technica ATH-SPORT50BT SonicSport Wireless In-Ear Headphones, Blue Headphones - Wireless A piezo sensor intelligently optimizes

A piezo sensor intelligently optimizes power and run time based on the debris picked up

and dense loops on the skin side provide soft cushioning while allowing moisture to escape

and quick start guide are included

Up to 20 hours battery life

Intelligent Eye Care automatically optimizes  brightness

(Open Box) Audio-Technica ATH-SPORT50BT SonicSport Wireless In-Ear Headphones, Blue Headphones - Wireless A piezo sensor intelligently optimizesThe ATH SPORT50BT wireless in ear headphones pair great sound with great fit and freedom of movement to fuel your workout wherever it takes you. The comfortable ear hook design keeps the headphones securely in place so the powerful 9 mm drivers can deliver all the crystal clear audio received through the Bluetooth wireless signal. And with a mic and controls conveniently built into the left housing, its easy to handle calls and control your music on