Product Overview SHIELD TALK is a Bluetooth wireless headset offered by Shirahato, a long-established mask manufacturer, through crowdfunding. This is a set including the main unit and all accessories (color: black). *I obtained this through crowdfunding, but due to changes in my work environment, I no longer have the opportunity to use it, so I am offering this unused, brand-new item for sale. Main Features Reduces the speaker's voice when worn, making it less audible to the surroundings (approx. -20dB noise reduction). Allows the other party in web conferences to hear your voice clearly. Main Specifications - Model Name: SHIELD TALK ST-01 - Battery Capacity: 3.7V 150mAh Lithium-ion battery - Usage Time: Approximately 8 hours (when fully charged) - Charging Time: Approximately 2 hours (using the included charging cable) - Bluetooth: Version 5.3 - Supported Profiles: A2DP, AVRCP, HFP, HSP - Communication Distance: Approximately 10m - Dimensions: 134mm x 75mm x 57mm - Weight: 95g ± 5g - Country of Manufacture: China - Accessories: Instruction manual, charging cable, earphones with microphone, storage case