Specifications: Material: Metal Sensitivity: 114 Resistance: 18 Communication: Bluetooth Frequency Response Range: 20 - 40000 Hz Style: In-Ear Control Button: Yes Volume Control: Yes Vocalism Principle: Balanced Armature Active Noise-Cancellation: NoPackage Includes: (As per your selected option) 1 x 16ba In Ear Hifi Bass Earphones with Noise Cancelling