Garmin 305 Forerunner GPS Heart Rate Monitor. Designed for athletes of all levels, this running partner and personal trainer has one goal in mind — a better you. It continuously monitors your heart rate, speed, distance, pace and calories burned so you can train smarter, more effectively. It tracks your every move with a super-sensitive GPS that even works on tree-covered trails and near tall buildings. Receive a detailed post-workout analysis on the PC with included Garmin Training Center™ software.

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Features:

New! Sleek, stylish, lightweight design that Wireless: Communication between system devices via ANT protocol

Weight: 2.72 oz. (77 grams)

Display (WxH): 1.3” x 0.8” (33mm x 20.3mm)

Physical size (WxHxD): 2.1” x .7” x 2.7” (53.3mm x 17.8mm x 68.6mm)

Lap Memory: 1,000 laps

Battery: Rechargeable internal lithium ion

Battery Life: 10 hours (typical use)

Waterproof: IEC 60529 IPX7 standards (submersible in one meter of water for up to 30 mins.)

Alerts: Time, distance, pace and heart rate

Heart rate monitor features:

Physical size (WxHxD): 13.7” x 1.4” x 0.5” (348mm x 35.6mm x 12.7mm)

Transmission range: approximately 3m (9.8ft)

Battery: 3 years (1 hour per day)/CR2032 (3 volts)

Weight: .74 oz (21 grams)