XU09 Hi-Fi Headphone Amplifier Portable Sound Amplifier Improver For iPhone 8 X MP3 MP4 Other 3.5m.. details from amazon.ae

Long-lasting 2000mAh internal lithium polymer battery lasts about 8 hours once being fully charged.Adopts aluminum-shielded case to prevent external interference noise from the audio device, the wireless signals, and other irrelevant noise.Able to drive various types of earphones. Compatible from 16 ohms (for low-impedance earbuds) to 150 ohms (for professional-quality, high-impedance headphones).Fashionable mini appearance, it is light, portable and easy to carry anywhere.There is an LED indicator for power on, battery charge, and low battery indication, and battery charging is done through the convenient micro USB port.