Product Description
The Invisible Clock-II has a silent or an audible alert, with a switch on the side so you can choose which alert you want. So you can keep time discreetly. Its small so you can easily wear it on your waist with the garment clip, or keep it in your pocket. It can be set in just about any way imaginable so you can time just about anything. It has 5 Powerful timing features, plus a stopwatch, adjustable vibration intensity and beep volume, a quick release belt clip, illuminated display, auto button lock to protect timing events in process, and uses one AAA battery which lasts for about a year (has backup to save settings while changing battery), and auto-daylight savings time adjustment. Uses: General Reminders; Meditation - the vibration can be set to low, medium or high - on low, it is perfect for meditation as it is very quiet; ADD/ADHD; Special Needs Kids  its often used for kids who need help remembering certain things such as paying attention in class; Wake Up Without Waking Your Partner  place it under your pillow and it is very effective for this; Medication Reminder - use the 12 alarms for medication reminders; Psychotherapy or Meetings  use the Meeting Timer to see clients without ever needing to look at the clock; Doctors and Chiropractors  Use the Custom Timer; Talks and Presentations - use the Timer or the Custom Timer for timing talks; Learning New Habits - use the Invisible Clock for learning new habits by setting the Timer on repeat to any time; Game Timer  some games need an exact timer that can be set in second increments  the Invisible Clock has this feature; Travel Alarm  with its light weight, lighted display and choice of silent or audible wake up, its great for this use; Time Management Tool  for anyone who needs help managing their time.

Reader Reviews
I use this timer for my own sittings, at home. But, unfortunately, at a Zen group sitting, where you can hear every tiny noise from every participant, this timer is far too noisy in its vibration mode. To really work well for meditation, it needs a silent, flashing LED as an alarm option. It is also VERY complicated to use. Don't lose the instructions! Download an extra copy of them to your computer from the manufacturer's web site.