Sennheiser - CX 150BT Bluetooth Wireless EarphonesThe CX 150BT wireless headset provides the perfect balance of audio quality, comfort and durability. Thanks to a sleek design, clear detailed sound with excellent noise isolation, comfortable fit (with four interchangeable ear tips supplied), and a 10-hour battery life, the CX 150BT is the perfect companion for everyday use. The CX 150BT wireless headset provides the ideal balance of audio quality, comfort and durability. Portable and robust, the CX 150BT is supplied with four different sizes of ear tips to ensure the perfect fit and excellent noise isolation. Connecting to mobile devices is fast and reliable thanks to the latest Bluetooth 5.0 technology and multi-connectivity that allows pairing with two devices simultaneously. Operation is made simple via a three-button remote, while general information such as the user manual or the quick guide are provided by the Sennheiser Smart Control App. The 10-hour battery life and fast USB-C charging makes the CX 150BT the ideal everyday companion. FeaturesAdvanced wireless Bluetooth 5.0 technology with seamless connectivitySuperior audio with AAC and SBC codec support10-hours of battery lifeDesigned for comfort with four interchangeable ear tip sizes included for optimal fit and sound isolationCall and music management via three-button remoteEffortless multi-connection pairing for two devices What\'s in the box?CX 150BT earphonesEar adapter set (XS/S/M/L)USB-C charging cableQuick GuideSafety Guide Technical DataMicrophone: MEMS, omnidirectionalSound pressure level (SPL):  112 dB (1 kHz/0 dB FS)THD, total harmonic distortion:  0.5 % (1 kHz, 100 dB SPL)Transducer principle: DynamicWeight: 12 gUSB Standard:  Type CBattery time: 10 h, SBCBluetooth Version: 5.0Codecs: SBC, AACEar coupling:  ear-canalEar pad material:  Biocompatible SiliconeFrequency response: 17 - 20.000 Hz (- 10 dB)Impedance:  28 Ω