Product parameters: Bluetooth Specifications: V5.0+EDR/A2DP/AVRCP/HFP Frequency range: 2.4026GHz-2.480GHz Transmission distance: more than 20 meters Channel: Stereo Speaker parameters: 24 ohms/30mm Speaker power: 10 mW*2 Signal-to-noise ratio: 104dB Function: previous song, next song, volume up, volume down, play, pause, answer a call, make a call, activate SIRI, microphone talkback Battery capacity: 200mAh Playing time: 10 hours (Apple phone 100% volume test) Talk time: more than 10 hours Standby time: more than 260 hours (actual test) Charging time: about 2 hours LED lights: 4 high-brightness LEDs, the brightest 420 lumens LED lighting effect: medium brightness, high brightness, slow flash, fast flash LED light irradiation range: 20-40 meters LED power supply: 250mAh large capacity rechargeable lithium battery LED working time: 7 hours for medium brightness, 2 hours for high brightness, 13 hours for slow flash, 13 hours for fast flash packing list:  1 set of bluetooth earphones 1 set of LED lights 1 hat 1 USB charging cable 1 manual Features: 1. Unique new private model LED light (removable). 2. LED light irradiation range: 20-40 meters 3. The latest Bluetooth V5.0 chip, high-fidelity stereo, shocking bass effect, clear and stable calls; 4. Ultra-low power consumption, 10 hours of continuous music playback 5. The transmission rate is fast and stable, and the unobstructed transmission distance exceeds 20 meters, and the maximum distance can reach 50 meters; 6. There are English voice prompts for startup, shutdown, successful pairing, low battery, and maximum volume; 7. Support iOS system to display power and activate SIRI intelligent voice assistant 8. The hat is made of high-grade artificial wool-acrylic fiber, which is environmentally friendly, does not fade, does not shrink or deform, double-layer knitting, flanging design, high-grade brown PU leather label, high-end fashion, there is a layer of waterproof PVC film sewn under the leather label, and the ear part of the hat For embroidery craftsmanship, high-end atmosphere! A single hat is about 90g 9. 4-level LED lighting effects: medium brightness, high brightness, slow flash, fast flash