What this wireless earphone can offer you is that it supports adjusting the volume and changing the music and is very convenient to use. This wireless earphone which has hook design is small and lightweight, stable and comfortable to wear. It is made of high-quality ABS material, with strong durability and high strength, making it very wear-resistant and can be used for a long time. The length of the product is 8.6cm, the width is 4.5cm, and the height is 1.15cm. It is suitable for left and right ears. Item Name: bluetooth-compatible Earphone Material: ABS Charging Time: About 1.5 Hours Sensitivity: 85dB or mW Battery Capacity: 230mAh Waterproof Grade: IPX 5 Impedance: 32Ω Transmission Distance: 10 Meters Working Frequency: 40Hz-20KHz Bluetooth Version: 5.0 Talk Time: About 20 Hours Size Details: Size: 8.6cm x 4.5cm x 1.15cm or 3.39" x 1.77" x 0.45" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x bluetooth-compatible Earphone 1 x User Manual 1 x Charging Cable Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.