1. Creative design. COOL Gradient Lights Shine the Dreamy Starry Sky 2. Vast Sound Field as a Hifi Mini Speakers in your Ears, Creating a Natural Stereo Field, Increases Stability of Sound Quality, and Reduces Acoustic Resonance to Improve CLARIT. 3.360 ° Immersive Stereo Live Experience for You. It displays richer music details with more clean, Fuller Midrange, and Deeper Bass. 4. Flagship Quality. 65ms senseless delay, Audio and Video Synchronization. 5.8 Hours of Play Time a Marathon with Audio and Video. With the charging cases, the state can reach up to 300 hours. 6.Bluetooth 5.3. Smoolh as Silk, A Andi-Electromagnetic Interference, No Jam or Disconnection, High-Speed Transmission, Composition with Apple and Android Devices. Specification: Bluetooth version: 5.3 (Jieli chip AC7003D8) Supported protocols: HSP, HFP, A2DP, AVRCP Talk time: 7H Play time: 6H Charging time: 1H standby time：200h Interface: Type-C Battery capacity of charging case: 300mAh (with protection plate) Battery capacity of earbuds: 40mAh*2 (without protection board but IC ) Best transmission distance: <1m Maximum transmission distance: 10m Voice prompt: support Sensitivity: 104±3dB Horn diameter: 10mm Impedance: 16Ω Frequency response range: 20Hz-20KHz Multi-point connection: nonsupport Manual: Chinese and English Included accessories: USB charging cable, user manual, earplugs of different sizes Colorful lights on charging case: yes Metallic paint on the cover Waterproof rate: IPX6 Call noise reduction: DNS Charge for 10 minutes, listen to audio for 180 minutes.