&lt;strong&gt;BATTERY WARNING: KEEP OUT OF REACH OF CHILDREN&lt;/strong&gt;&lt;br /&gt;&lt;br /&gt;Store spare batteries securely&lt;br /&gt;&lt;br /&gt;Dispose of used batteries immediately and safely&lt;br /&gt;&lt;br /&gt;If you think batteries might have been swallowed or placed inside any part of the body seek immediate medical attention&lt;br /&gt;&lt;br /&gt;&lt;h3&gt;309 Watch Battery&lt;/h3&gt;N/AN/A&lt;strong style=&#39;color:red;&#39;&gt;**** FREE UK DELIVERY ****&lt;/strong&gt;N/AN/A&lt;p&gt;N/AReplacement battery for many models of wristwatch please consult documentation or current watch battery to ensure that this is the correct battery for your watch. We cannot accept responsibility for any damage caused if the wrong battery is used. We also cannot accept returns of this item if opened.N/A&lt;/p&gt;N/AN/A&lt;h2 style=&#39;color:red;&#39;&gt;*** THIS LISTING IS FOR 2 (TWO) BATTERIES ONLY ***&lt;/h2&gt;N/AN/A&lt;br /&gt;N/ARenata Silver Oxide 1.55v Button BatteryN/A&lt;br /&gt;&lt;br /&gt;N/A309 (SR754SW)N/A&lt;br /&gt;&lt;br /&gt;N/A1.55v - 0% Mercury - Non-rechargeable - Quantity: 2N/A&lt;br /&gt;&lt;br /&gt;N/AN/AN/A&lt;h3&gt;Renata 3xx - Mercury Free&lt;/h3&gt;N/A&lt;p&gt;N/AMercury Free (MF) Silver Oxide BatteriesN/A&lt;/p&gt;N/A&lt;p&gt;N/ARenata has developed its 0% mercury battery line in close cooperation with the Swiss Watch Industry. The new batteries were tested by various independent laboratories and approved by several important OEM customers. Most of the major luxurious Swiss Watch Brands rely on Renata.N/A&lt;/p&gt;N/A&lt;p&gt;N/ACreated with zero mercury and zero lead added these batteries have been tested to be just as powerful as conventional watch batteries while being more environmentally friendly.N/A&lt;/p&gt;N/A&lt;p&gt;N/AFor maximum power and sustainability go green with Renata Mercury Free Silver Oxide BatteriesN/A&lt;/p&gt;N/A&lt;ul&gt;N/A&lt;li&gt;100% mercury &amp; lead free&lt;/li&gt;N/A&lt;li&gt;An optimised volume/capacity ratio&lt;/li&gt;N/A&lt;li&gt;Dimensional precision and stability&lt;/li&gt;N/A&lt;li&gt;High capacity retention on storage (low self-discharge)&lt;/li&gt;N/A&lt;li&gt;Excellent reliability thanks to a uniformly high quality level&lt;/li&gt;N/A&lt;li&gt;State of the art leak proofness thanks to a new sophisticated sealing process&lt;/li&gt;N/A&lt;li&gt;Constant availability&lt;/li&gt;N/A&lt;/ul&gt;N/A&lt;p&gt;N/ARenata&#39;s professional expertise is worth having on your side and in your watches.N/A&lt;/p&gt;