1. LED light irradiation range: 20-40 meters, the maximum brightness of LED lights can reach 1.2 watts! ! 4 bright , the brightest 200 lumens2. The latest Bluetooth V5.2 chip, high-fidelity stereo, shocking bass effect, clear and stable calls3. Ultra-low power consumption, continuous music playback for 24 hours (100% maximum volume test for 7)4. The transmission rate is fast and stable, and the unobstructed transmission distance exceeds 20 meters5. There are English voice prompts for power on, power off, successful pairing, low battery, maximum volume, etc.iOS system can display power and activate SIRI intelligent voice assistant.The hat is made of high-grade artificial wool-acrylic fiber, which is environmentally friendly and does not fade, shrink or deform. It is double-layer knit, with flanging design, high-grade brown PU leather label, high-end fashion, and a layer of waterproof PVC film is under the leather label. The ear part of the hat For embroidery craft, high-end atmosphere!5 levels of LED lighting effects: medium brightness, high brightness, slow flash, fast flash, red and blue lights flashing.Bluetooth specification:V5.2+//A2DP/AVRCP/HFPFrequency range:2.4026GHz-2.480GHzTransmission distance:more than 20 metersChannel:StereoSpeaker parameters:24 ohm/30mmSpeaker power:10 mWx2Signal-to-noise ratio:104dBFunctions:previous song, song, volume up, volume down, play, pause, answer call, make call, activate SIRI, microphone intercomBattery capacity:400mAhPlaying time:24 hours (100% volume test of mobile phone)Call time:more than 24 hoursStandby time:more than 500 hours (actual test)Charging time:about 2 hoursColour:A:Dark GrayMaterial:AcrylicPackage Contents:1 * Cap LightOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.