With Apple Watch on the horizon, industry analysts are placing their bets on how many units Apple can move on its first weekend of availability, with one prediction pegging the number at one million. Based on a potential attach rate of less than one percent of total iPhone users, Piper Jaffray analyst Gene Munster said in a research note published Tuesday he believes Apple could see total Apple Watch sales hit one million units over the weekend starting April 24. The huge number includes both preorders and launch sales, though it is not yet clear if Apple will have stock on hand to sell to walk-in customers. Munster's logic banks on loyal customers who are anxious to get their orders in on April 10. Further, the analyst expects Apple to sell some 300,000 units in the first 24 hours of availability, equating to an 8 percent attach rate on iPhone 6 and 6 Plus preorders. Compared to Apple's recent iPhone 6 and 6 Plus device debut, Apple Watch sales may see a boost