olloclip Lens Kit Includes: Telephoto and Ultra-Wide Premium Glass Lenses for iPhone 8/8 Plus & iPhone 7/7 Plus with Selfie Bluetooth Remote Shutter - Walmart.com
Amazon.com : olloclip Essential Telephoto 2X, Ultra-Wide Lens Kit with Multi-Device Clip Compatible with iPhone, Pixel and Samsung Galaxy Smartphones + Selfie Bluetooth Remote Shutter : Electronics
Accessory review: Olloclip telephoto lens and circular polarizing lens for iPhone: Digital Photography Review
Olloclip launches telephoto lens with interchangeable circular polarizing lens: Digital Photography Review
Olloclip introduces new interchangeable lens system for iPhone 7 | Mashable