High-capacity 20000mAh/30000mAh solar power bank with dual charging for extended outdoor use. Premium ABS+PC fireproof casing and shockproof design ensure durability in rugged environments. Integrated high-efficiency monocrystalline solar panel provides 5V/1A emergency charging under direct sunlight. Features dual USB outputs (5V/2.1A total) and LED power indicator for precise monitoring. Smart IC chip protects against overcharge/overcurrent for multiple devices simultaneously. Water-resistant IPX4 rating withstands splashes during hiking/camping expeditions. Ultra-slim 18mm profile with matte anti-scratch surface for premium portability. Includes built-in compass and 2-in-1 charging cable (Micro USB/Lightning). Ideal for backpackers, emergency kits, and off-grid workers needing reliable power. OEM/ODM support available for bulk orders with custom branding options.