sand timer ,xinbaohong hourglass sand timer 5 minutes 15 minutes timer clock for kids games classroom home office kitchen use (pack of 2) (4.7''x 2.3'', 5 min(blue) and 15 min(green)) xinbaohong <p>usingthese colorful sand hourglass timers can help solve all your troubles. not onlyhelp you do things efficiently, but also can teach your kids about the timemeaning, what's more, perfect for timing cooking, games, exercising,experimentalize and kids study, their multicolors also can make your home moreunique. a quite great gift for your kids and friends. </p><p> <br></p><p> </p><p>hourglass symbolizes love andfriendship, as well as happiness. and this refers to that we should be eternalhappiness, and forever cherish the love and friendship! it is the best gifts tofriends, lovers !also perfect gifts to teach kids for time management !</p><p> <br></p><p> </p><p><b>features:</b></p><p>material: transparent acrylic +plastic + glass tube + sand</p><p>height: approx. 16cm / 6.3inch</p><p>across flats: 7.2cm / 2.8inch</p><p>diagonal length: 8.2cm / 3.2inch</p><p>item weight:6.4 ounces</p><p> <br></p><p></p><p><b>4 colors (2 sets )available</b></p><p><b>set 1:</b>3minute timer(yellow)、10minute timer(orange)</p><p><b>set 2:</b>5minute timer(blue)、 15minute timer(lighe green)</p><p> <br></p><p>package including:2 x glass sand timer</p><p> <br></p><p>notice: sand hourglass timer may be ±10% time deviation,not a complete precision timing device.</p>