Size & Operating Instructions Colorful LED Lights Equipped with colorful LED lights, After turning it on, long press the Play button to turn the light on or off. The LED lights will dance and flash with the music. Long Standby The Bluetooth headphones are charged with a 400mAH battery, which provides about 8 hours of talk time and 180 hours of standby time. It only takes 1 hour of charging time to fully charge the battery. For first time of use, charge the headset in advance. Wireless and Wired Mode Bluetooth 5. 0 enables you to get rid of audio wire,offering the fastest Audio transmission in excellent stability. If it runs out power, you can switch to wired mode and continue your headphone enjoyment with audio cable in its case.The built-in microphone only functions in the wireless mode. All Bluetooth Devices Compatible Compatible with iPhone, iPad, Android and other bluetooth devices. Compatible devices includes, iPhone, Android Smartphone, Tablet, Laptop, PC, iPad, MacBook and other Bluetooth enabled devices. Foldable & Soft Adjustable length to fit different sizes. Earmuffs used with Skin-friendly Leather Material, and super soft over-ear pads are not just more comfortable for long-time wear. What's In The Package 1 x Bluetooth headphones 1 x USB charging cable 1 x 3.5mm audio cable 1 x English manual