Microlab HB21 Bluetooth Headphones (Black) is a versatile and stylish audio solution designed for users who want comfort, convenience, and quality sound in one package. Built with modern wireless technology, it features Bluetooth v5.3, ensuring faster pairing, stable connectivity, and reduced power consumption. This makes it suitable for seamless audio streaming from smartphones, tablets, or other Bluetooth-enabled devices without interruptions. Equipped with 40mm speaker drivers, the HB21 delivers clear and balanced sound with enhanced bass, making it ideal for listening to music, watching movies, or even handling calls. With a sensitivity of 108db±3db and 32-ohm impedance, it ensures an immersive listening experience across different genres of audio. For those who need versatility, the headphones also support multiple input options including Micro USB, 3.5mm AUX, FM radio, and TF card, giving you the freedom to enjoy music in different ways without relying solely on Bluetooth. In terms of battery performance, the Microlab HB21 is reliable for everyday use. Its 250mAh battery with protection board ensures safe charging and usage. The headphones take only 1.5 hours to fully charge and can provide 8–10 hours of listening time or around 3.5 hours of talk time. For convenience, it also boasts an impressive standby time of up to 4 months, making it highly practical for users who may not use it daily. Designed in an elegant black finish, the HB21 is lightweight and comfortable to wear for extended periods. The package includes the headphones, a user manual, and a charging cable, so you have everything you need to get started. Whether for music lovers, commuters, or casual listeners, the Microlab HB21 offers a solid mix of performance, style, and affordability, making it a dependable everyday companion for wireless audio entertainment.