Headphone battery capacity: 30 mAh Bottom compartment battery capacity: 160 mAh Charging time: about 30 minutes; Talk time: about 4 hours; Play time: about 4 hours; Standby time: about 3 months Bluetooth version: 5.0 Bluetooth distance: 8-15 meters How to connect the earphone: First time to connect earphone with phone: 1. Pick up the earphone from the charging box directly. Then both the lights on earphone and charging box flash. 2.Find "Y01" on your phone after the light of charging box turn off(It's important because the earphone and charging box are connecting with each other when the lights on.) Not first time: Pick up the earphone from the charging box directly. The earphone connect with phone automatically. FQAS: Question: Why there is no sound after I connect the earphone? Answer: 1. Please don't trun on the earphone by FUNCTION BUTTON! Always Pick up the earphone directly and it turn on automatically. 2. Don't connect the earphone until the light on charging box stop flashing. 3. If you have mutiply Y01 earphones, please always put the earphone in the right box (don't mix them). 4. If you find there is no sound after connecting, you can restart the earphone by long pressing the FUNCTION BUTTON for 5 - 8 seconds. Then put the earphone back on the charging box. Remove the connection history on your mobile phone. Then Pick up the earphone and try connect it again. It work! Storage box charging times: 4-5 times Control method: touch control Color:Black Material:ABS Package Contents: 1 * Bluetooth Earphones 1 * charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.