Microsoft Lumia 640/640XL Compact Car Air Vent Phone Holder for Phones and MP3/MP4 up to 3.6 Inches Wide Mount your Microsoft Lumia 640 / 640XL or MP3 player securely and safely by using your car air vent Spring arms can accommodate phones up to 3.6 wide Silicone cover on spring arms firmly hold your device in place Easy to install Position your device either horizontally or vertically