SENNHEISER Over the Ear Bluetooth Headset (FLX 70) Type: Bluetooth Headset Noise Reduction: Yes Ear Coupling: Over the Ear Talk Time: Up to 6 hour(s) Standby Time: Up to 240 hours Operating Range: 33 Feet Specifications: Blocks up to 70% of ambient noise FlexiFit design for a customized, comfortable fit DSP noise reduction for clear calls Accessories include: earhook, ear adapters, lanyard, USB/Wall charger Compatibility: Bluetooth 2.0+EDR + eSCO