This strip offer offers 4 line (Pwr/Gnd/Clk/Dat) control of APA102C RGBs, 60/M on black substrate in a silicone sleeve.
These addressable RGB stripxels feature the APA102C LED elements mounted 60 per meter, on a black PCB. This model is cased in a silicone IP65-compliant sleeve for good water resistance, but I wouldn't suggest you add exterior patio lighting to your submarine with them.
These are sold by the meter
These are sold by the meter! You may or may not get a power connector pre-soldered to the end of your strip. The only way to be sure is to order a full spool (5M length). A set of 4-wire connectors may be a good idea.