■ Developed a new unique feature, "Magnetic Switch (PAT.P)," which turns the power ON when the earphones are taken out and separated, and OFF when they are magnetically attached. ■ ※ "Magnetic Switch" is a registered trademark of Audio-Technica. ■ Long battery life with up to 25 hours of continuous playback. ■ Wireless charging Qi compatible, just place the charging case. ATHCKS50TW2BK ● "Magnetic Switch (PAT.P)" function allows use with just the earphones, leaving the case at home. The earphones turn ON when taken out and separated, and OFF when magnetically attached. This eliminates the stress of "worrying about battery life if not in the charging case" and "the hassle of taking them out of the case every time" that you might feel with previous true wireless earphones, allowing you to use them immediately when you want to. ● Long battery life with up to 25 hours of continuous playback※. With noise-canceling OFF, the earphones alone provide up to 25 hours of continuous playback※, so you can enjoy music, videos, and SNS all day long without worrying about the battery running out. Also, with noise-canceling ON, you get up to 15 hours, and with the charging case, you can get up to 65 hours of continuous playback※. ※ When playing music. Varies depending on usage conditions. Body weight: Earphones: approx. 7.2g (L side), approx. 7.2g (R side) / Charging case: approx. 51.5g Wireless (true wireless) Type: Canal type Noise-canceling function: Supported Bluetooth supported profiles: A2DP, AVRCP, HFP Bluetooth Version: Standard Ver. 5.3 compliant Bluetooth supported codecs: AAC, SBC Charging terminal: USB Type-C Music playback time: Up to approx. 25 hours (earphones) with noise-canceling OFF Case charging times: 3 times Case charging time: Approx. 4.0 hours (when charging via USB) Earphone charging time: Approx. 2.5 hours Quick charge (mm minutes charge/mm minutes playback): 5 minutes charge / 90 minutes playback Sensitivity: -38dB (1V/Pa, at 1kHz) Playback frequency band: 5-20,000Hz Impedance: 20Ω Waterproof/Dustproof: IP55 (earphone body only) Microphone: Supported Single-ear use: Supported Accessories: Charging USB cable (Type-A / Type-C), earpieces (XS, S, M, L)