Woot offers Bluetooth Smart Autio Frame Sunglasses for $17.99 (orig. $29.99). Free shipping for Prime Members.

Product Description:
Smart Glasses Bluetooth Sunglasses Audio Sunglasses with Speakers Electronic Music Glasses Built-in Mic, Polarized Lenses, Touch Voice Assistant, Hands-Free Calling, Open Ear Sound

• 【Open-Ear Sound Experience】-- Our Smart Listening Glasses are designed with an open-ear speaker, let you say goodbye to the discomfort of wearing headphones for a long time, immersive sound to the space around your ears. Enjoy your favorite music while maintaining awareness of your surroundings.
• 【Listen To Music / Hands-Free Calling】-- Easily connects your iOS/Android/other devices to enjoy all your favorite music. The built-in microphone enables you to hands-free calls with clarity, dual microphones pick up your voice clearly over background noises and Privacy mode automatically activates to stop people around you overhearing your calls.
• 【Polarized Lens And UV Protect】-- Our Bluetooth Music Sunglasses are equipped with a polarized lens, which will effectively protect your eyes from sun glare, suitable for outdoor activities such as fishing, driving, walk the dog, sunlight bath, etc. Equipped a Ultra light frame, without pressing the nose, very comfortable to wear, humanized designs more in line with human facial contours.
• 【Touch-Enabled And Voice-Assistant Control】-- Open Ear Audio Sunglasses with smart voice assistant technology, easily speak Siri, Cortana and Google Now to connects to your favorite FM stations, audio books, music, easily change music tracks, play or pause media, manage calls, and activate your smartphone’s voice assistant.
• 【Powerful Battery Time】-- Our Smart Audio Sunglasses have great Battery Longevity, a built-in 120mAh battery fully charged within 2 hours, can support 7 days of Standby, 4 hours of music playback and 6 hours of call conversation, When folded up and not in use, it conserves power by shutting off automatically.
• 【24 Months After-Sales Support】-- Our sunglasses with Bluetooth offer 24-month replacement warranty to each of our customers from the date of purchase, so if you find the package any defective, damage, missing parts, etc. Please contact us anytime, we will get back to you within 24 hours.