Description:It is close to the contours of the ears and comfortable and painless to wear because it is semi-in-ear ergonomically design.The large high-quality moving coil unit and professional MEMS silicon microphone allow for clear, full, pure and lossless sound effect of the earphone.Made of ABS, the earphone is eco-friendly, lightweight and durable to use.The length of this product is 6.5cm, the width is 4.5cm and the height is 2.8cm. It is only slightly larger than a coin, which is compact and exquisite, and comfortable to wear.It is suitable for playing games, doing sports, hands-free calling, listening to music and so on. With 0.015 seconds delay in game mode, you can get the golden delay point in the 15ms delay of combat opportunity.Item Name: EarphoneMaterial: ABSModel: M33Color: Black, WhiteBluetooth-compatible Version: BT5.1Communication Distance: within 10 Meters (Barrier-free Link)Headphone Battery Capacity: 30mAh (Included)Charging Bin Battery Capacity: 300mAh (Included)Charging Time: about 0.5-1HStandby Time: about 22HMusic Talk Time: 3-4H (Single Use of Headset)Frequency Response Range: 20-20KHzImpedance Range: 32Q15%Microphone Sensitivity: -42dB3dBDistortion: 5%General Functions: Incoming Calls, Music Play/Pause, up and down Music, Voice AssistantFeatures: Touch Control, LED Display, Non-delayedSize Details: 6.5cm x 4.5cm x 2.8cm/2.56" x 1.77" x 1.1" (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 Pair of Earphones1 x Charging Box1 x Charging Cable1 x User Manual