The SVEN AP-B500MV are closed-back, over-ear multimedia stereo headphones designed for versatile audio use. They offer wireless freedom via Bluetooth 4.2 with a range of 10 meters, and the multipoint connection allows you to stay linked to more than one device simultaneously. For times when the battery runs low or you prefer a wired setup, a detachable 0.8-meter audio cable with a 3.5 mm mini-jack is included. Equipped with dynamic drivers, these headphones cover a frequency range from 20 Hz to 20,000 Hz with a sensitivity of 105 dB SPL/mW and an impedance of 32 Ohm. An integrated microphone with a response range of 30 Hz to 16,000 Hz makes them suitable for calls and voice chats. The built-in battery provides up to 12 hours of playback and recharges through a Micro-USB port, while an LED indicator keeps you informed about the device status. Constructed from ABS plastic and silicon, the headset weighs only 155 grams, making it light enough for extended wear. On-board controls for power, volume, and playback are easily accessible, allowing you to manage your media without reaching for your phone. This combination of lightweight materials and dual connectivity options makes them a practical choice for anyone needing a reliable pair of headphones for daily entertainment and communication.