Long battery life: Transmitter and receiver are equipped with high-performance rechargeable batteries, the charging box is long-lasting. High quality audio transmission: Supports a frequency range of 20 Hz to 20 kHz for clear sound. Lightweight and portable: The transmitter weighs only 11.5 g, the receiver 7 g and the charging box 85.5 g for easy carrying. Versatile connectivity: Supports different connection methods for a variety of devices and is easy to use. Complete accessory pack: Includes charging box, transmitter, receiver, USB-A to USB-C cable and storage box. Translated with DeepL.com (free version)