Description:Due to the ergonomic design, this earphone perfectly fit your ear to bring you more comfortable wearing experience and efficiently improve the noise reduction effect.The Bluetooth-compatible earphone has high speed and stable transmission provided by the Bluetooth-compatible 5.1 version. And it has no delay.It is made of good quality ABS material, durable to use.The length of this product is 9cm, the width is 4.5cm and the height is 3cm.It is suitable for music, sports, travel, gaming, etc. It can also be used as a power bank.Item Name: EarphoneMaterial: ABSBluetooth-compatible Version: V5.1Input/Output Voltage: 5V-1ASpeaker Size: 8mmCharging Box Battery Capacity: 2000mAh (Included)Headphone Battery Capacity: 40mAh (Included)Life Time: about 6 HoursOperation Mode: Smart TouchFrequency Response: 20Hz-20KHzProduct Function: Dual Mode Switching, Up and Down Music Switching, Volume Increase and Decrease, Call/Reject/Play/Pause, Voice AssistantFeatures: Touch Control, Volume Control, Long EnduranceSize Details: 9cm x 4.5cm x 3cm/3.54" x 1.77" x 1.18" (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 USB Cable2 Pairs of Ear Caps1 x User Manual