Immerse yourself in a world of superior sound and comfort with the Volkano Pebble Series Bluetooth Headphones.   Powered by Bluetooth 5.0 technology and an advanced AB chipset, these headphones offer a seamless wireless experience with a reliable 10-meter operating distance, giving you the freedom to move without compromising on audio quality.   Featuring 40mm drivers and a sensitivity of 100+-3db, the Volkano Pebble Series delivers a rich and immersive audio experience across a wide frequency range from 20 Hz to 20 kHz. The 32-ohm impedance ensures compatibility with various devices, while the 400mAh battery provides an impressive playback time of up to 40 hours on a single charge. With a quick 3-hour charging time and a convenient 5V DC input, these headphones are designed to keep up with your on-the-go lifestyle.   Revolutionize your auditory experience with the flawless fusion of style, cutting-edge technology, and enduring comfort embodied in the Volkano Pebble Series Bluetooth Headphones.   Specifications: Bluetooth Version: 5.0 Chipset: AB Operating Distance: 10m Sensitivity: 100+-3db Driver: 40 mm Frequency: 20 Hz - 20 kHz Battery: 400mAh Impedance: 32 Ohm Charging Time: 2 hours Playback Time: Up to 40 hours Charging Input: 5V DC