Features: Smart Bluetooth-Sunglasses: These polarized Bluetooth-sunglasses feature built-in speakers for wireless audio streaming, offering high-quality sound and hands-free calling during outdoor activities like driving or cycling, while providing UV protection and a stylish design suitable for everyday use. Polarized Bluetooth-Sunglasses: Designed with polarized lenses to reduce glare and enhance visibility, these smart glasses deliver crisp audio through integrated speakers, making them ideal for outdoor sports such as running or baseball, and they serve as practical yet trendy birthday gifts for men and women. Fast Charging & High Quality Sound: Equipped with fast-charging technology, these audio sunglasses provide extended playback time and rich, high-quality sound for an immersive listening experience, perfect for long hours of outdoor riding or daily commutes without frequent recharging. Waterproof Audio Sunglasses With Speaker: These durable smart sunglasses feature a waterproof design and built-in speakers, ensuring reliable performance and clear audio during sweaty workouts or rainy conditions, while offering UV protection and comfort for active lifestyles. UV Protection Outdoor Sport Sunglasses: Combining UV-protective polarized lenses with wireless-Bluetooth functionality, these sunglasses are optimized for outdoor sports like cycling and running, delivering excellent sound quality and hands-free convenience for both casual and athletic users. Specifications: Material: Plastic Size: 15*14.5*5cm Weight: 100g Battery life: Over 8 hours Transmission range: 10 metres Notes: Please allow slightly errors due to manual measurement and different monitors. Include: 1*Smart Bluetooth-Sunglasses 1*Charging Cable 1*Manual