E6 Earphones Product Specifications Bluetooth Version: V5.4 Battery Capacity: 180mAh Charging Time: Approximately 1.5 hours Music Playback Time: Approximately 10 hours Bluetooth Profiles: HFP/AIDP/AVRCP Operating Frequency: 2.40 GHz - 2.48 GHz RF Sensitivity: -92dBm Operating Temperature Range: -10 +50℃ Communication Range: <=15M Product Contents Bone Conduction Earphone Body: 1 Charging Cable: 1 Japanese Instruction Manual: 1 With the increase in telework and time spent at home, there are more situations where people are wearing earphones for extended periods. Our bone conduction earphones use the latest proprietary bone conduction technology, transmitting sound as vibrations through the bones directly to the brain, without going through the eardrum! You can safely enjoy music in any situation, such as in daily life while protecting your ear health and making it easier to hear children's voices! 【Comfortable Fit】 Not only does listening to music without blocking your ears eliminate the feeling of pressure, but the bone conduction earphones are as light as a feather, weighing only 23g?? They are less likely to cause fatigue even after long hours of use, unlike conventional in-ear types. Also, because of the open design that doesn't cover the ears, your ear canals won't get stuffy, providing a comfortable fit and a clean feeling, as if your ears are breathing. The earphones are lightweight and fit well, making them recommended for people of all ages and genders!