【Intercom: High-Capacity 2800mAh Battery & Fully Waterproof】 ・Standby Time: 1000 hours ・Maximum Operating Time: 170 hours (Maximum Volume: 70 hours) ・IPX7 Fully Waterproof ・Type-C Rapid Charging Compatible ・Noise Reduction Function (60km - 120km) ・Hands-free Calling ⭐︎Can be used even on rainy days. This class of intercom boasts an impressive 2800mAh battery, which is rare, eliminating the need for frequent charging. ⭐︎The sound quality is also quite clear, making it a recommended choice for those who primarily want to use it for music. ⭐︎Uses a "boom microphone" that can also be used with half helmets. This intercom is recommended for those who want to make touring more comfortable, offering waterproof, long-lasting, and high-quality sound. ○