Original true wireless earbud hearing protector -- only better! Featuring an upgraded 25 NRR and Bluetooth 5.2 technology, the new and improved FREE 2.0 provides enhanced noise reduction and functionality for an enhanced audio experience in the same, great cordless fit. SKU# IT-74 (ISOtunes Green) / SKU# IT-73 (Matte Black) Certified hearing protection blocks 25 dB Battery up to 7 hours plus two full charges in the case Durable IP45 dust and water resistance Bluetooth 5.2 Noise isolating microphone SafeMax Technology™ limits volume output to 85 dB FREE 2.0 comes with a variety pack of foam and silicone eartips, a USB-C charging cable, and a charging case