Used a few times. Wiped with disinfectant wipes. Type-C charging cable is not included. Feel free to negotiate the price. Earphone Section Type: Dynamic Driver: φ9mm Output Sound Pressure Level: 110dB/mW Playback Frequency Band: 5～20,000Hz Impedance: 20Ω Microphone Section Type: MEMS Directivity: Omnidirectional Sensitivity: -38dB(1V/Pa, at 1kHz) Frequency Band: 100～8,000Hz Communication Specifications Communication Method: Bluetooth Standard Ver. 5.2 compliant Maximum Communication Distance: Within 10m in a clear line of sight Operating Frequency Band: 2.4GHz band (2.402～2.480GHz) Modulation Method: GFSK, Pi/4DQPSK, 8DPSK Spread Spectrum Method: FHSS Supported Bluetooth Profiles: A2DP, AVRCP, HFP Supported Codecs: Qualcomm® aptX™ Adaptive audio, Qualcomm® aptX™ audio, AAC, SBC Supported Content Protection: SCMS-T method Supported Sampling Frequency: 44.1kHz, 48kHz Supported Bit Depth: 16bit, 24bit (for Qualcomm® aptX™ Adaptive audio playback) Transmission Band: 20～20,000Hz Other Power Supply Earphones: DC3.7V Lithium-ion battery (built-in) Charging Case: DC3.7V Lithium-ion battery (built-in) Charging Time* Earphones: Approximately 3 hours / Charging Case: Approximately 3 hours Usable Time: Continuous Communication (during music playback)* Up to approximately 20 hours (earphones) Up to approximately 50 hours (when using the charging case) Weight Headphones: Approximately 8g (L side), Approximately 8g (R side) Charging Case: Approximately 60g Water Resistance: IPX4 (earphone body only) Operating Temperature Range: 5～40℃ *Varies depending on usage conditions.