The tennis ball sized, bouncy Nite Ize LED K-9 Meteor Ball offers great fun for medium sized dogs, children over 3 & adults alike. The glowing ball is perfectly designed to occupy your dog even at night or in darker times of the year if you cannot manage to go for walkies in daylight. The on-off mechanism is very robust in order to make the ball as durable as possible. The rubber outer shell makes it extremely hard-wearing & is well suited as a dog toy. It is water-resistant & floats. Please note: In order to avoid corrosive damage, the LED-module & battery case including contents should be carefully removed & dried after any contact with water. Changing the batteries: Using a screwdriver, remove the LED-module & battery case, take out the button batteries & replace with two 3 V DL2013 or DL2016 batteries. Carefully replace the LED-module & battery case. Warning: The LED K-9 Meteor Ball from Meteorlight is not a chew toy. It is designed for throwing & fetching games. Throwing the ball at very high speeds (e.g. using a ball launcher) or bouncing it very hard can damage the product. Due to its smaller diameter we recommend this product for small to medium sized dogs. As with any other product your pet should be supervised with this toy. Please check the product regularly for any damage, & replace the toy whenever it becomes defective or a piece of the toy goes missing, in which case harm to your pet cannot be ruled out. Switching the lighting effect on & off: On: Press down heavily for approx. 3 seconds on the indicated area Off: Press down heavily again on the indicated area & hold it down until the ball begins to flicker & finally turns itself off. See picture of Nite Ize Meteor Ball Battery Directive Information Batteries are included in the delivery of many appliances that help e.g. to work the appliance with a remote control. Batteries can also be built in to appliances. As regards the sale of these batteries we, as manufacturers of said batteries are obligated to inform our customers of the following: Batteries should not be disposed of along with normal household waste. Please dispose of old batteries, as stated by governmental legislatures, either in a communal collection point or return them free of charge to place of purchase. Batteries bought from us can be returned after use to the address below free of charge or simply send them back to us in a stamped envelope. zooplus AG Versandzentrum Vor der Hecke 4 34355 Staufenberg Batteries containing contaminants are labeled with the symbol of a rubbish bin with a line through it & are recognized by the chemical symbol for the rating of crucial contaminating heavy metals. Cd stands for cadmium, PB for lead & HG for magnesium.