The Xiaomi Mi Band 4 delivers fantastic value, features and upgrades over its predecessor include a colour OLED display with significantly improved outdoor viewability and a higher resolution too. The band’s battery life is also exceptional, and it has improved tracking, making it an easy fitness gadget to recommend with a colour display, heart rate monitor and a connected GPS. The front of the Mi Band 4’s core unit is the touch screen as well as a capacitive button below it. Interaction across these elements is a combination of swipes and taps. Its undercarriage is where the heart rate monitor sits, alongside a pogo pin connector for charging. As for the strap, the simple buckle system is secure, comfortable, and is made from thermoplastic polyurethane. Viewability is also significantly better thanks to the fact brightness climbs up to 400 nits. This means that indoors or out, it’s easy to see, and when combined with smart gestures to wake it up with a wrist twist, it’s the first Mi Band device to feel like it could be a smartwatch replacement. Anyone looking for an affordable fitness tracker that has basic smartwatch functionality without breaking the bank, the Xiaomi Mi Band 4 could be just the ticket.