Green Lion Helsinki Smart Glasses are made with the latest technology, redefining convenience and style—durable metal combined with an ABS frame in crafting these sleek yet robust glasses. Polarized anti-blue lenses protect your eyes from glare and screen fatigue, ensuring comfort for extended use. The Bluetooth V5.4 inside provides seamless wireless connectivity up to 10 meters. The built-in microphone and touch controls make for hands-free call handling, turning on voice assistants, and playing music without reaching for your device. Equipped with a dual 55mAh battery for up to 5 hours of continuous playing or talking, it has a magnetic charging system that charges fully in just 1.5 hours. Integrated 10mm speaker with 95±3 dB sensitivity provides crystal-clear, immersive audio. Thanks to IPX4 water resistance, the Green Lion Helsinki Smart Glasses resist splashes and light rain, hence good for both indoor and outdoor activities. Specification Material: Metal + ABS Lens Material: Polarized + Anti-Blue Lens Battery: 55mAh×2 Bluetooth: V5.4 Transmission Distance: 10m Speaker: 10mm Sensitivity: 95±3 dB Impedance: 32? Frequency Response: 2400-2480MHz Waterproof: IPX4 Charging Type: Magnetic Charging Time: 1.5H Playtime: 5H Talk Time: 5H Features Touch Control Built-in Microphone Polarized Anti-Blue Lens Play/Pause Answer/Reject Calls Voice Assistant Remote Control