(Updates prices, adds comment)
MOSCOW, Feb 2 (Reuters) - The Russian rouble weakened of Monday, with market players still reacting negatively to the central bank's unexpected decision on Friday to cut rates, and a decline in oil prices weighing on the currency.
At 0735 GMT, the rouble was around 0.7 percent weaker at 69.42 against the dollar and around 0.6 percent lower on the day at 78.45 versus the euro.
On Friday, the central bank surprised the markets saying it was cutting it key interest rate by 2 percentage points to 15 percent, with analysts saying the move might have come too early.
"Although a dovish (central bank) bias is now more apparent, the timing of further easing depends on how the markets react to Friday's decision and the central bank's readiness to stabilise expectations via non-interest-rate policy tools in case of renewed pressure on the currency," Vladimir Kolychev, an analyst at VTB Capital, wrote in a note.
Oil, Russia's main export, saw its prices falling on Monday after a surge above $50 per barrel on Friday. Brent futures traded more than $1 down on the day at around $51.70
"If the enthusiasm of buyers in the oil market dries up and the price of Brent returns to the level of around $48 (per barrel), the rouble is doomed to fall further," said in a note Gleb Zadoya, head analyst at Profit Group in Moscow.
"In this case, the rouble can test the levels of 85 per dollar and 95 per euro."
Investors were also concerned about new wave of fighting in eastern Ukraine over the weekend after peace talks collapsed.
"News that Ukrainian peace talks again broke down will do nothing to support sentiment," analysts at Sberbank Investment Research wrote in a note.
In contrast to the rouble, Russian stocks were stronger on Monday. They were pricing in the rebound in the price of oil on Friday evening, which occurred after the Moscow stock exchange had closed.
On Monday, the dollar-based RTS index was up 1.7 percent to 749 points and the rouble-based MICEX was 0.2 percent higher at 1,650 points.
Reporting by Lidia Kelly, editing by Jason Bush