【Bone Conduction Technology】 Utilizes advanced bone conduction technology for private listening, ideal for use under pillows without disturbing others 【Dual Sound Modes】 Features two audio modes optimized for music and audiobooks, enhancing the listening experience 【Long Battery Life】 Offers up to 15 hours of playtime on a single charge, with a standby time of 150 days 【Digital Display】 Equipped with a digital screen for easy monitoring of device status and settings 【Sleep-Friendly Design】 Perfect for improving sleep quality and addressing insomnia issues without causing ear damage 【Versatile Usage】 Suitable for various scenarios including bedrooms, dormitories, and office naps, catering to music lovers, audiobook enthusiasts, and students Specifications: Material: Aluminum alloy + ABS Dimensions: 100 x 28 x 13 mm Charging Port: Type-C Battery Capacity: 400mAh (Polymer lithium battery) Charging Time: 2 hours Playtime: 15 hours Standby Time: 150 days Frequency Response: 20Hz - 20KHz Power Usage: 2.8W BT Version: 5.3 Input Voltage/Current: 5V/2A Signal-to-Noise Ratio: ≥85dB Features: Dual bone conduction speakers, timer function