JBL Soundgear Sense Wireless Open-Ear Sports Earphones Colour:Black It comes in 2 sizes

It comes in 2 sizes (XS–S and M–XL)

kilograms or stones and pounds

Forerunner 245 Music can handle whatever’s ahead

Dimensions: 330mm (L) x 200mm (W) x 340mm (H)

• Flow Rate: 400 L/min

JBL Soundgear Sense Wireless Open-Ear Sports Earphones Colour:Black It comes in 2 sizesJBL Soundgear Sense true wireless open ear headphones feature JBL OpenSound Technology with air conduction, which doesn't completely close off your ear canal, making them comfortable enough to wear for hours. Flexible earhooks rotate, so you can choose whether you want to focus on your music or calls, or let in more sound from the world around you. A detachable neckband provides an even more secure fit while you're working out, and an IP54 rating