bluetooth headphones 4-mics call noise reduction 64hrs ipx7 waterproof power bank occiam wireless earbuds over ear earphones with 2200mah charging case for sports running workout gaming occiam feature</br> 1) engineered for business running sports and exercise workout.</br></br> 2) 4 mics with environmental noise reduction improve the clarity of voice while reducing background sounds.</br></br> 3) adopt wireless technology that offers rich sound with defined equalization,produce stereo and detailed music performance.</br></br> 4) the wireless earbuds will give up to 8hours of play back on one charge with an additional 64 hours from the charging case.</br></br> 5) 2200mah battery capacity can provide emergency charging for mobile phone.</br></br> 6) charge the charging case with type-c charging cable or wireless charging pad(not included).</br></br> 7) ipx7 waterproof defends wireless bluetooth earphones against liquids, rains, sweats.(note: the charging case is not waterproof.)</br></br> 8) one-step pairing,automatically connect with the last paired device once the bluetooth of device is enabled.</br></br> 9) ergonomically designed with an oblique angle and the silicon ear-tips shape to ear canal to seal. reduce noise as well as enhance comfort.</br></br> 10) each earbud can be used independently on 2 different devices at mono mode,for example: r earbud for mobile a, l earbud for mobile b.or both wireless earbuds can be used together on one device for stereo music.</br></br></br> spec</br> 1.bluetooth version:bluetooth 5 edr</br></br> 2.supports:hsp,hfp,a2dp,avrcp</br></br> 3.charging port:type-c</br></br> 4.battery capacity:(li-ion battery inside) earbud:75mah charging case: 2200mah</br></br> 5.battery life: earbuds will last 8 hrs on single fully charge(actual battery life changes with the song types and volume requirements)</br></br> 6.standby time:up to 100 hours</br></br> 7.charging time:1-1.5hrs for earbuds, 2.5hrs for charging case </br></br> 8.transmission range:33feet (with no obstacle)</br></br> 9.earbud weight/size:10g, 37*55*30mm