You can wear it on both the right and the left ear with 360 degree rotatable design.10mm bass unit and noise reduction brings you HD phone call.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: Plastic Quantity: 1Pc Bluetooth Version: 5.0 Transmission Space: 10m Battery Capacity: 140mAh (Included) Playing Time: about 15 Hours Charging Time: about 1 Hour Features: Wireless, Comfortable to Wear, Rotatable Size: 8.2cm x 4cm x 1.5cm/3.23" x 1.57" x 0.59" (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 Wireless Earphone 1 x USB Charging Cable