A compact, portable device with Bluetooth connectivity, a removable 18650 battery, solar charging support, and an emergency flashlight. It pairs with mobile phones via Bluetooth and cannot pair with Bluetooth headsets. The removable 18650 battery can be recharged with a solar charger when sunlight is available. Bluetooth connectivity: Pairs with mobile phones via Bluetooth. Not compatible with Bluetooth headsets. Battery and charging: Removable 18650 battery; supports solar charging when used with a solar charger. Emergency flashlight: Builtin flashlight for illumination. To activate, press and hold the light; release to turn off. Design and durability: Compact, portable form for easy carry in a bag or pocket. Performance: Reliable operation in low light and offgrid situations. Use scenarios Outdoor activities: Camping or hiking, where you need a simple light and a straightforward phone connection. Power outages: Provides a ready light source when mains power is unavailable. Travel and emergencies: Useful for roadside or travel scenarios to improve visibility and safety.