Automatic/ Manual Activation; OLAS Mobile Application Technology Detects Break In Its Virtual Tether To The ACR OLAS Float-On Within 8 Seconds Of Transmitter Going Missing; Wearable Crew Tracker; For Use With Boats Up To 40 Feet; 720 Hours Standby With Water Activation Mode And OLAS Active/ 1440 Hours Standby With Water Activation Mode Active; Rechargeable Lithium Battery; 1.3 Inch Depth x 3.26 Inch Height; IP67 Waterproof; FCC/ RED/ CE Certified; With USB Charging Cable/ Lanyard/ Clip; 3 Hours Charging Time