Docooler 2.4G Sports Wireless Heart Rate Monitor ANT Smart Sensor Type Chest Strap Belt

Here's to the ones. The health-caring people, the gym fans, the beauty-loving people, the life-enjoying people, the ones who see things differently. They invent, they create, they explore, they imagine, and they inspire. Our product is adding brilliance to those people's present splendor. Because it changes things just like they do.

Specifications:
Color: Black
Battery: CR2032
Material: ABS+plastic+silica gel
Transmission: 2.4GHz ANT+ Sports system
Transmitter size: 6.5 * 3.8 * 0.8cm / 2.5 * 1.48 * 0.38in
Transmitter weight: 19g / 0.67oz
Belt size: 101 * 2.9cm / 39.8 * 1.1in(before-stretching); 160 * 2.9cm / 63 *1.1in(after-stretching)
Belt weight: 36g / 1.26oz
Package size: 12 * 4.2 * 11cm / 4.8 * 1.6 * 4.3in
Package weight: 89g / 3.13oz

Package List:
1 * Transmitter Device
1 * Adjustable Elastic Strap
1 * User Manual(English)

Note:
Transmitter: Attach it to the strap in the right directions.
Battery: Open and close it with a coin.
When used with iPhone 4S/4/3GS, it requires an ANT+ adapter.