Features: Open Design: The BT earbuds adopts an open design, allowing the ears to breathe freely. The non-intrusive design effectively protects the ear canal from damage while ensuring sound quality. Comfortable Wear: The earbuds is ergonomically designed, with a soft and elastic ear hook part. It can be twisted at will and quickly rebound without deformation, ensuring comfortable wear for long-term use. High-Quality Sound: The new BT 5.4 chip makes the sound more robust and powerful. The custom composite silicone titanium diaphragm speaker is strong and powerful, providing high-clear and powerful output for both music and calls. 3D Holographic Stereo Sound: OPEN 3D holographic stereo directional sound transmission, music and calls can be heard clearly, creating an undeniable auditory enjoyment. Long Battery Life: 20 hours of comprehensive battery life, BT 5.4 low power consumption, longer battery life. Lightweight and Portable: Small and portable, lightweight design, ensuring lightweight while improving comprehensive battery life. Specification: Optional color: Black / Purple / Skin Tone BT version: BT V5.4 Frequency range: 20HzKHz Charging time: <2 hours Battery life: <20 hours Wearing Style: Hooked to ear Transmission distance: 10m-15m Charging Output: DC5V/300mA Charging Interface: Type-C Charging capacity: 300mAh Package size: 9*9*6cm Package weight: 110g Package list:1* Earbuds1* Charging cable1* User manual