Baseus Bass 35 Max Wireless Headphones in Grey. Bluetooth 5.3 with about 10m range, around 50 hours of playback at 70% volume, and a 600mAh battery that charges over USB-C in about 2 hours. Weighs about 234.5g, with an ABS, PC and metal build. Frequency response 20Hz to 20kHz. Includes a USB-C cable (0.3m). Comes with a 2-year warranty.