The Samsung Galaxy S6 active shares plenty with the regular Galaxy S6, and that's particularly true when you're talking about the internal specs. You have the same processor, RAM, storage, screen and ports, with the big change being a large bump in battery capacity. Here's the full spec breakdown.

Category Specification
Operating System Android 5.0.2 Lollipop with TouchWiz
Display 5.1-inch QHD (2560x1440) 577ppi Super AMOLED
Processor Octa-core 4x2.1GHz + 4x1.5GHz 64-bit 14nm Samsung Exynos processor
Storage 32GB (non-expandable)
RAM 3GB LPDDR4
Rear Camera 16MP, OIS, ƒ/1.9, auto real-time HDR, low-light video, high clear zoom, IR detect white balance, virtual shot, slow motion, fast motion, pro mode, selective focus
Front Camera 5MP, ƒ/1.9, auto real-time HDR, low-light video
Network LTE Category 6 (300/50Mbps)
Connectivity 802.11a/b/g/n/ac (2.4/5GHz), HT80 MIMO(2x2), 620Mbps, dual-band, Wi-Fi Direct, Mobile hotspot
Bluetooth 4.1 LE, A2DP, atp-X, ANT+
GPS, GLONASS, NFC, IR remote, USB 2.0
Sensors Accelerometer, ambient light, barometer, compass, gyroscope, hall, heart rate monitor, HRM, proximity
Charging USB 2.0 (Adaptive Fast Charging), Qi wireless (WPC 1.1, 4.6W output), Powermat (PMA)
Battery 3500 mAh (non-removable)
Dimensions 146.81 x 73.41 x 8.64 mm / 5.78 x 2.89 x 0.34-inches
Weight 150g / 5.291 oz
Video Formats: MP4, M4V, 3GP, 3G2, WMV, ASF, AVI, FLV, MKV, WEBM, VP9
Audio Codecs: MP3, AMR-NB, AMR-WB, AAC, AAC+, eAAC+, WMA, Vorbis, FLAC, OPUS
Formats: MP3, M4A, 3GA, AAC, OGG, OGA, WAV, WMA, AMR, AWB, FLAC, MID, MIDI, XMF, MXMF, IMY, RTTTL, RTX, OTA
Samsung software features Active Zone, Download Booster, OneNote, Private Mode, Quick Connect, S Health 4.0, S Finder, S Voice, Samsung Pay, Smart Manager, Sound Alive+, Themes
Google Mobile Services Chrome, Drive, Gmail, Google Settings, Google+, Hangouts, Maps, Photos, Play Books, Play Games, Play Movies and TV, Play Newsstand, Play Store, Voice Search, YouTube
Colors White, blue, gray