Headset Wireless Bluetooth Headset Metal Telescopic New Large Earmuff Bluetooth Headset Features: Bluetooth wireless and wired dual-purpose design: The headset has a 3.5MM audio port and a card- socket, which can meet your needs Free adjustment of telescopic head beam: the telescopic arm design is used to - adjust the size of the headphone head beam, most of which can be worn comfortably Skin-friendly ear stickers are accompanied by softness: ear muffs are made of skin-friendly leather and vegetable soft memory sponge, which are breathable and not stuffy, providing comfortable wearing enjoyment No delay picture synchronization in the game: the connection is stable and continuous. -, listen to the voice, distinguish the position, high-definition video, ultra-low delay picture synchronization 40MM super speaker: high resolution to - the details of every sound, HIFI level - adjusted by - . Like a live concert, you can enjoy the exciting immersive music and give you a new experience - your- Product Description: Product parameters: New version of Bluetooth: V5.3 Charging time: about 2 hours Music playback time: about 15 hours ( to volume and song) Talk time: about 15 hours (depending on the volume) Battery specification: 3.7V/400mAh Class A lithium battery with double protective plates Effective stable connection distance: ≥ 20m Support external card- ( card) Support FM radio function foldable structure, metal telescopic tab Input voltage/current: 5V/1A Horn: diameter φ 40MM，32 Ω, Audio output power: 22mw * 2 Microphone: sensitivity - 42dB ± 3 Product packaging size (CM): 18.3 * 9.3 * 14.5 Package weight (g): 350 Package: 1 * Headphones 1 * Charging cable 1 * Audio cable 1 * Instructions 1 * Packing box WIRELESS CONNECTION: The Bluetooth headset uses wireless connection technology for quick pairing with mobile phones, computers and other devices without the use of cumbersome cables. HIGH SOUND QUALITY: This Bluetooth headset usually uses advanced audio processing technology to provide clear and pure sound quality, allowing users to enjoy a more realistic music experience LIGHTWEIGHT AND COMFORTABLE: This bluetooth headset is often designed with a lightweight design, which is easy to carry and will not feel pressure when wearing it for a long time, providing a comfortable using experience. LONG BATTERY LASTING TIME: The Bluetooth headset has a built-in high-capacity battery that provides a long battery life, allowing users to enjoy music or calls for a long time. ENHANCED DURABILITY: This Bluetooth headset is designed with highly durable materials and construction to withstand the friction and bumps of daily use for a longer lifespan.