If you take your training seriously, you'll definitely appreciate the POLAR TF H10+ Crush chest sensor. It works on a medically accurate principle based on ECG sensing, is easy to connect with your watch or phone using Bluetooth or ANT+ technology, and is so comfortable to wear that it won't restrict you at all during sports. It’s also waterproof, so you can definitely use it when swimming.

Characteristics:

• allows you to measure your heart rate with maximum accuracy
• works with a smart watch, mobile apps or even on its own
• soft material strap for comfortable use during sports
• the strap holds well thanks to silicone points
• can be used when swimming

Technical specifications:

• connection to a mobile phone via Bluetooth
• compatible also with a watch equipped with ANT+ connection
• can be paired with two devices at the same time
• adjustable length 67–95 cm
• weight 21 g + strap 39 g
• waterproof up to 30 m
• built-in memory