Item Type: Wireless Bluetooth Earbuds Material: ABS Electric Headset Battery Capacity: Built In 35mAh Lithium Battery *2 (Included) Charging Case Battery Capacity: Built In 200mAh Lithium Battery (Included) Bluetooth Version: V5.0 Signal Distance: Approx. 10m/32.8ft Charging Time: About 40 Minutes Talk Time: About 2 Hours Standby Time: About 80 Hours Frequency Range: 20-20KHz Support Protocol: HSP HFP A2DP AVRCP Package List 2 x Earphones 4 x Earbuds 1 x Charging Case 1 x Charging Cable 1BLUETOOTH 5.0 CHIP: Wireless bluetooth earbuds with bluetooth 5.0 chip for fast transmission and stable connection, low latency gaming and calling experience. 2NOISE CANCELLATION: Bluetooth stereo earbuds feature new microphone smart noise cancellation technology for high definition calls that clearly communicate your words. 3EASY OPERATION: Take the headset out of the charging case to turn on automatically and put it back into the charging case to turn off and charge automatically. 4LOW POWER CONSUMPTION: Wireless earbuds feature low power consumption technology for extended power usage and a charging compartment that provides charging multiple times. 5FULL FREQUENCY SOUND GENERATION: Large composite diaphragm moving coil, full range sound more powerful and pure, listen to the sound can be predicted in advance of the orientation.