Estimated Delivery:8 ~ 10 business days, Shipping Fee GBP 9.99 Features: 1. These smart sunglasses are the combination of smartphone, headset and sunglasses, letting you listen to music or make hands free calls 2. Open-ear audio allows you to stay aware of your surroundings while enjoying your music 3. Integrated microphone for clear calls and access to your phone virtual assistant 4. Waterproof grade IP64, they are sweatproof and not afraid of drizzle 5. Built-in rechargeable 80mAh battery, once 1-2hrs fully charge gives you 4-7hrs of playing time Specification: Name:Smart Bluetooth Glasses Speaker power:16 ohm * 1 watt Battery capacity:250mah (rechargeable) Power supply:USB charging Charging time:2 hours Standby time:5-8 hours Working time:5-8 hours (based upon of the playback volume) Frame material:ABS Glasses leg material:ABS Connection method:Bluetooth 4.1 Color:Black, Red, Blue Product Size:52 x 148 x 143 mm Glasses net weight:about 36g Package Included:1 x Smart Glasses