Description Report Item • Foldable design for easy storage :The earphones can be easily folded and stored in your pocket or bag, making them convenient to carry around. • Support for SD card and Bluetooth 5.1 :You can listen to your favorite music from an SD card without the need for a mobile phone or PC, and the latest Bluetooth 5.1 technology ensures a stable and fast connection. • Built-in microphone for hands-free calling :The earphones come with a built-in microphone that allows you to make hands-free calls, making them perfect for use while driving or working. • Leather material for comfort :The earphones are made of high-quality leather material that is comfortable to wear for extended periods, ensuring that you can enjoy your music without any discomfort. About this item: Siindoo JH-812 【 WIRELESS BLUETOOTH ,WIRE AND MICRO SD MODE】Siindoo JH-812 Built to provide a quick and stable Bluetooth connection. Just slide the on/off button and the headphones will be in ready to pair mode. The Wireless Headphones are compatible with all Bluetooth.Siindoo headphones are also audio cable enabled, so you can easily use them with any phone, tablet, laptop, PC and TV. (To pair with TV, you would need additional Bluetooth adapter; Micro SD cards are accepted up to 32GB). 【 HI-FI WIRELESS HEADPHONES】Siindoo JH-812 headphones deliver High Fidelity stereo sound which results from a 40mm neodymium driver and Ear cushion design – both combining to provide superior immersive HIFI sound quality and a well-closed environment for your ears to enable you lose yourself in the music. 【ADJUSTABLE AND PORTABLE DESIGN】: Adjustable headband are ergonomic design and ultra-soft ear cups, Bluetooth headphones provide a comfortable around-ear fit. Foldable design makes it easy for you to take the headphones whenever they go. Perfect for on-line courses, classes, movies, etc. 【LONG BATTERY LIFE & DUAL MODE】Siindoo JH-812 Headphones are Rechargeable. 400mAh battery, 28 hours of music time, 2-2.5 hours Fast Charing. After 15 hours of playtime, you can switch to wired mode and enjoy your music NON-STOP. You do not need to worry about power shortage problem for the long travel. Specification Siindoo JH-812 Bluetooth headse Bluetooth version V5.1 Ac6956a Bluetooth chipset Working distance） ≥10M Charging port：Type-C Battery is 400 mAh Charging time about 2.5 H Standby time about 200H Taking time about 21H Music play time about 24H (70% volume) Dual Device Connection Speaker Driver Units F40 mm Impedance 32 ± 2Ω V Speaker Sensitivity 110db±3db Frequency response 20Hz~20KHz Feature of over ear bluetooth headset: Ergonomic design, more comfortable to wear Lightweight and simple structure Foldable and stretchable design,portable to take Frosted surface texture Support FM radio / SD card Softly padded headband and protein foam earmuffs that cover fully their ears 3.5mm jack line wired headphone + Bluetooth Fashionable and unique design what's in the box: • 1 x Siindon JH-812 headset • 1 x 0.5m Type-C charging cable • 1x1.2m TO cable • 1 x User manual