The earphones are comfortable in the ears, and will not be painful when worn for a long time, and they will not fall off easilyThe wide compatibility allows the headset to be easily matched and connected with the device you are using, simple to use and easy to operateWhether as a gift to a friend or to yourself, this will be a great value choice Item Name: Wireless Earphone Material: ABS Quantity: 1Pc Bluetooth Version: 5.0+EDR Transmission Space: 10m Battery Capacity: 50mAh (Included) Supported Protocols: HEP/HSP/A2D/AVRCP Charging Time: 1-2 Hours Music Time: 4-6 Hours Standby Time: 100-150 Hours Frequency Range: 2.40-2.48GHz Distortion Rate: ≤1% Frequency Response: 20Hz-20KHz Sensitivity: 80dB Features: Wireless, Rechargeable, Mini, In-ear Size: 2.2cm x 1.8cm x 1.2cm/0.87" x 0.71" x 0.47" (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. The wireless earphone is not TWS earphone, which can not connected with 2 phones simultaneously. Package Includes: 1 x Wireless Earphone 1 x USB Charging Cable 1 x User Manual