SUUNTO Vyper Air - Manual (Page 102)

9.4. Wireless transmitter battery replacement
NOTE
It is advisable to contact an authorized Suunto representative for
transmitter battery replacement. It is imperative that the change
is made in a proper manner to avoid any leakage of water into
the transmitter.
9.4.1. Transmitter battery kit
The transmitter battery kit includes a 3.0 V CR ½ AA lithium cell battery and a lubricated
O-ring. When handling the battery, do not make contact with both of the poles at the
same time. Do not touch the metal surfaces of the battery with your bare fingers.
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