Features:[iOS Voice Assistant] Press for 2 seconds to arouse the voice assistant and make it more convenient for you to enjoy music.[Auto Pairing and Memory Connection] Taken out of the charging cabin, the earphones are automatically started up and automatically paired. Put into the charging cabin, the earphones are automatically shut down, disconnected and begin to charge.[Intelligent Quick Charge and Long Standby] With the built-in 1500mAh polymer lithium battery in the charging bin, the cabin body can be quickly charged and standby time reaches up to 5 hours.[Intelligent Noise Reduction] Noise-reduction technolog help to exclude the noises when in noisy environment..[Strong Compatibility]Compatible with iOS and Android system as long as your cellphone support BT function.[IPX5 Waterproof Level]Suitable for sports waterproof and sweat proof, enjoy music in rainy days and when exercising.Specifications:BT: 5.0Waterproof Level: IPX5BT Transmission Distance: 10 meters barrier-free.Battery Capacity of Charging Case: 1500mAhBatteryCapacityof Earphones: 50mAhCall Duration: 4hMusic Duration: 4hHeadphone Charging Time: 1hCharging Time of the Box: 2hStandby Time: 120hProduct Size: 80*36*31mm/3.1*1.4*1.2inchPackage Size: 130*110*47mm/5.1*4.3*1.8inchNote:The mobile phones and computer showed in the picture are not included.Packing List:2 * Earphones1 * Charging Case1 * USB Charging Cable1 * User Manual