The results are in and the first-of-its-kind i770R is the clear choice for the refined diver who wants it all. Anything you aspire to achieve-from open water to recreational tech diving- this computer is there for you. Constructed with the most important features in mind, the i770R offers intuitive design for effortless usage, allowing you to focus on the dive. Bluetooth with faster data transfer and a solid connection on a low energy protocol. Paired with a matching transmitter, this special edition i770R computer + transmitter allows you to monitor current pressure and remaining gas time without a stiff high pressure hose while providing a more streamlined profile.i770R Computer FeaturesStay ConnectedAfter your dive, Bluetooth connectivity lets you share your stats, location, memories, and photos on social media via the free DiverLog+ app on your smartphone (for iOS and Android)Ultra-bright Color ScreenThin Film Transistor (TFT) color screen with easy-to-use interface for perfect clarity under any conditions3-axis Full-tilt CompassEasy-to-read compass graphics with a compass-bearing lock and reciprocal heading for easy navigation. An alternate compass bar can be displayed on the primary dive screen with the touch of a buttonRechargeable Lithium BatteryLong-lasting, easily rechargeable batteryAlways Stay AccurateOur hoseless air integration and Gas Time Remaining algorithm provide calculations in real time for accurate gas measurementOne-Time Transmitter PairingPair your transmitter once, and it's paired for lifeVersatile Air CapabilityCompatible with four different transmitters and gas mixes on a single diveFour Operating ModesDive how you like with Air, Nitrox, Gauge dive modes, plus Free Dive (tracks calculations to allow switching between dive modes and free dive)Digital CompassIncludes north reference, return bearing lock, and declination adjustmentMemoryMaintains settings and calculations during battery changesIntuitive NavigationSingle-button access to last dive data (maximum depth and bottom time)Well LitEasy reading in low light conditionsIncreased SafetyAudible alarms and additional high-visibility LED warning light4 Gas ComputerAble to switch up to three gases underwaterUpdatable softwareUser-updatable software gives you long-term access to the latest features and upgrades via Bluetooth connectionWater ActivationWater activation feature gives you a worry-free start to your diveRugged FinishExtremely durable and resistant to abrasionAdvanced Watch FunctionsAlternate time zone, stopwatch, lap timer daily alarm, countdown timeHistory ModeHistory Mode lets you see your total dives, maximum depth, total dive hours, and lowest temperature. Records up to 24 divesNitrox Mix CapabilityUp to 100% O2. Mix up to 3 Nitrox gasesDeep StopOptional deep stop with countdown timerGo AnywhereSalt or freshwater dive selectionAltitude AdjustmentAutomatic altitude adjustment ensures an accurate profileTransmitter Features Hoseless Gas Pressure Transmission Battery is user changeable and commercially available Once set, the transmitter is permanently paired and will not accidentally pair with other computers 2 transmitter versions available: Nitrox compatible up to 40% or 100%