Description: Single Bluetooth Earbud: Mini invisible wireless earbud, compact and lightweight size, comfortable to wear, no burden on the ear, can be easily put into your pocket. Digital Display: 1-9 single digit digital display screen, smaller size, display 9 when fully charged. Intuitive and convenient, easy to observe, real time understanding of the power of the earphone. Easy to Operate: One button controls all feature, playback, next song, play/pause, phone calls, etc. Hifi stereo sound effects bring an audio visual feast. Support voice assistant function. Bluetooth 5.3: Bluetooth 5.3 provides more stable connection, lower latency, faster paring and universal compatibility. And buying 2 earbuds can achieve true wireless function. Long Standby: Built in 100mAh capacity baterry, the standby time is about 220 hours, 10 hours long playtime, It takes about 2h to charge the headset. IPX5 Waterproof, suitable for business, office and sports. Specification: Product size: 2.5cmx1.3cm/0.98x0.51inch Material: plastic Pairing name: M5 Bluetooth version: V5.3 Battery capacity: 100mah Frequency: 20Hz-20KHz Impedance: 32 ohms Sensitivity: 85dB/mW Waterproof grade: IPX 5 Package Includes: 1 Piece Earbud 1 Piece Charging Cable 1 Piece Ear Caps 1 Piece Manual Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!