Wireless Bluetooth LED Music Knitted Hat Warm Beanie Hat USB Charging Product Information Item Name: Wireless Bluetooth LED Hat Gender: Unisex Size: One Size Material: Acrylic Size: 23*20cm Color: Navy Blue, Grey, Black Features: Upgraded LED Headlight BeanieThis wireless hat has 5 rechargeable high light LEDs, with 3 updated adjustment modes: 50% brightness, 100% brightness, red and blue emergency lights, you can choose different levels of brightness according to the environment or use the red and blue emergency lights when you are in an emergency. Perfect for every who likes going in the outdoors.Wireless 5.0 Bluetooth HatBluetooth 5.0 wireless technology offer stablest and strongest connection, support 10m long-distance transmission, easy and fast to pair with most smartphones, tablets and other Bluetooth enabled music devices in seconds. Built-in wireless stereo speaker and microphone for hands-free answering and listen music, enhance your music listening experience.Built-in 2 Rechargeable BatteriesWith built-in 2 rechargeable batteries, one is for headphones, another is for LED light, you can remove it to charge by laptop, power bank, socket, car charger, etc. 2 hours LED charging time provides 4h normal lights or 3h emergency lights. 1 hours bluetoth charging time for 10 hours music playing time or 8-10 hours talking time. Totally meet your need when you are running in outdoors. Package Includes: 1 x Hat Note Please allow 2-3 cm difference due to manual measurement. Besides different computers display colors differently, the color of the actual item may vary slightly from the below images, thanks for your understanding(1 inch = 2.54 cm)