Berlin (dpa) — As small as a thumbnail, but with crisp audio: Google’s new Bluetooth earbuds, the Pixel Buds Pro 2, are tiny and weigh just 4.7 grams each. Compared to the previous model, the buds have lost around a third of their volume and weight. This size reduction hasn’t harmed the battery life though. The Pixel Buds last 6 to 8 hours and if you don’t use them too intensively, one charge will last well over a week. Compared to the previous model and other earplugs, the buds switch on quickly and are ready to use as soon as you put them in your ear. Switching through the sound modes by a f…