Air cushion comfort. Bluetooth. 6.5h. Sweat proof IPX2. Voice assistant compatible. Remote + Microphone. Up to 6.5 hours battery life. Accessories: Charging cable: 3 size ear pieces. Specifications: Bluetooth Ver.5.0. Power Supply: Built-in lithium polymer chargeable battery. For some mobile phones, you may not be able to use some or all functions depending on the specifications of the mobile phone itself. Instructions inside. May vary depending on usage conditions. Designs and specifications are subject to change without notice. CE Listed. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference that may cause undesired operation. Designed in Japan. Made in China.