http://tinyurl.com/ky8t4tb
New Oceanic Transmitter Battery Kit for the OC1, OC1-LE, VT Pro, VT3, VT4.0, VT4.1, Atom, Atom 2.0, Atom 3.0, Atom 3.1 & Compumask Scuba Diving Computer
Battery Kit Includes....
Factory approved battery
Battery hatch o-ring
Silicone grease