Available for immediate purchase (^^) Thank you for viewing. This is the "Golden Kamuy × TOoKA BASE" collaboration wireless earphones, the Lieutenant Koito model. I used them for about a week and then stored them in a dark place. Featuring voice recordings by Mr. Katsuyuki Konishi, this product is currently sold out. I would be happy if those who love Golden Kamuy would consider purchasing them (⁎ᵕᴗᵕ⁎) ※Accessories include the instruction manual and ear tips. ※No claims or returns accepted. 【Recorded Voices】 ・Power on → "The power is on. Work hard today." ・Power off → "The power is off. Take a rest." ・Please set up pairing → "It seems we need to connect again." ・Pairing successful → "Connected! Good, good!" ・Pairing failed → "Kyah!? The connection has been lost!" ・Battery is low → "Damn, the battery is low! Charge it soon." ※A secret voice is also included♪ 【Product Specifications (Made by Gourmandise, Diamond Cut Model)】 ・Bluetooth version: 5.0 ・Frequency response: 20~20000Hz ・Sound pressure sensitivity: 100dB±3dB ・Communication distance: Up to 10m (without obstacles) ・Supported profiles: HSP, HFP, A2DP, AVRCP ・Supported codecs: SBC, AAC ・Rated input: 5V/1000mA ・Music playback time: Approximately 3.5 hours ・Talk time: Approximately 3 hours ・Standby time: Approximately 100 hours ・Power: microUSB 5V/1A ・Charging time: Earphones approx. 2 hours / Charging case approx. 2 hours ・Maximum playback time: Approximately 12 hours (when the main unit and case are fully charged) ・Weight: 33g (including 4g x 2 for each earphone) ・Built-in power supply: Lithium-ion polymer secondary battery ・Accessories: Ear tips (S/M/L), instruction manual