Audio-Technica's Solid Bass technology brings heavy bass reproduction to in-ear monitors. The ATH-CKS55XBT utilizes a unique design, incorporating an additional air chamber for a deep, precise bass that leaves room for Audio-Technica's signature mid-range and clarity at the highest frequencies.Driver: 12.5mm
Sensitivity: 105dB / mW
Playback frequency: 5 ~ 24,000Hz
Transmission band: 20 ~ 20,000Hz
Impedance: 16 ohms
Communication system: Bluetooth standard Ver.3.0 + EDR compliant
Output: Bluetooth standard Power Class2
The 2 position posts for the included silicone ear tips let you adjust to the best comfort and sound isolation for your ear. The ATH-CKS55XBT also uses Bluetooth 3.0 coupled with a high quality internal headphone amplifier so you can enjoy your music with no strings attached.