My watch have been doing this lately. After a few minutes, it goes back to normal, the weird part is that the battery is fully charged, I use it outdoor every day.
Casio G-Lide GWX-8900 | Bitácora de Javier Gutiérrez Chamorro (Guti)
CASIO G-SHOCK - EL G-SQUAD PRO GSW-H1000 te acompañará en todos tus entrenamientos, ya sean de #running, #trailrunning, #entrenamientos en interiores, #natación, #ciclismo, #snowboard, #surf y #pesca! Tan solo pesa 103 gramos