Bold Sound, Unplugged. On-ear headphones are all about all-day battery and comfort, and Riff 2 is no exception. It delivers the goods affordably with 34 hours of battery life, backup aux cable and the peace of mind that comes with Tile® finding technology. Headphone Features Audio Drivers: 40mm Frequency Response: 20 – 20,000 Hz Cable Type: Wireless Bluetooth® Version: 5.2 Microphone: Yes On-ear controls: Yes Charging port: USB, Micro-USB, Lightning Battery life: 34 hours in total Foldable & Adjustable Headband: Yes Headphone Return Policy: No refunds or exchanges allowed on open products.