HTC One M8 for Windows.

The HTC One M8 running Windows Phone 8.1 includes high-end specs and support for HTC's Dot View case as well.

• The specs of the device include the following:
• Windows Phone 8.1 
• 2.3 GHz quad-core, Qualcomm Snapdragon 801
• 32 GB internal storage; micro SD (up to 128 GB)
• 2 GB of RAM
• 5-inch Full HD, Super LCD3 display with Corning Gorilla Glass 3; 441 ppi
• 2600 mAh battery
• Duo camera
  Primary camera: HTC UltraPixel™ camera , BSI sensor, pixel size 2.0 um, sensor size 1/3”, f/2.0, 28mm lens
  HTC ImageChip 2. 1080p Full HD video recording with HDR video
  Secondary camera: capture depth information 
• Front camera
  5MP, BSI sensor, wide angle lens. with HDR capability, 1080p Full HD video recording
  Photo Edit with UFocus™, Dimension Plus™,         Seasons,Foregrounder, Image match
• Nano SIM
• HTC Boomsound
• U-Focus
• HTC Dot View case support. 

Get Duo camera system,Cortana,live tiles Finally... on  HTC one m8 for windows.
Crafted with the One’s iconic design, the HTC One (M8) for Windows features a wraparound unibody frame, tapered edges, and a curved back that pours into your grip unlike any other Windows phone. Featuring front facing stereo speakers with built-in amps and auto-balancing software, the HTC One (M8) for Windows reaches volume and richness you have to hear to believe. Immersive audio brings your music, videos, and games to life with stunning clarity.Enjoy the best-sounding Windows phone with HTC BoomSound.

source : - Htc one m8 windows