ATH-CK200BT, Bluetooth-compatible wireless earphones. - Brand: audio-technica - Model Name: ATH-CK200BT - Color: Blue - Bluetooth: Yes Connect to music wirelessly, in your favorite color, wherever you like. ● Wireless playback via Bluetooth. ● φ9mm driver with vibrant sound. ● Easy operation of music, videos, and calls with the in-line controller. ● Sealed type that prevents sound leakage. ● Small body for a gentle fit. ● 7 hours of playback, perfect for commuting to school or work. ● Includes a clip for stable wearing. ● Interchangeable earpieces included. Detailed Information ● Communication Specifications Communication System: Bluetooth standard Ver.4.1 compliant Maximum Communication Distance: Within 10m in a clear line of sight Frequency Band: 2.4GHz band (2.402〜2.480GHz) Modulation Method: FHSS Supported Bluetooth Profiles: A2DP, AVRCP, HFP, HSP Supported Codec: SBC Supported Content Protection: SCMS-T method Transmission Band: 20〜20,000Hz ● Headphones Type: Dynamic Driver: φ9mm Output Sound Pressure Level: 100dB/mW Playback Frequency Band: 20〜24,000Hz Impedance: 16Ω ● Microphone Type: Electret condenser Directivity: Omnidirectional Sensitivity: -44dB(1V/Pa,at1kHz) Frequency Band: 100〜10,000Hz ● Other Power Supply: DC3.7V lithium polymer battery (built-in) Charging Time *: Approximately 3 hours Usable Time *: Continuous communication (during music playback): Approximately 7 hours Continuous Standby: Maximum approximately 200 hours Weight: 14g Operating Temperature Range: 5〜40℃ Color: BK (Black) * Varies depending on usage conditions. ● Accessories: 30cm USB charging cable (USB Type-A/Micro USB Type-B) Earpieces (XS, S, M, L), clip ● Sold Separately: Replacement earpieces ER-CK200BT USB compatible AC adapter AD-SU505JEA