Beware! The iPod Touch 6G had miserable battery life when on Wi-Fi — you turn on Wi-Fi and just watch the battery drain!
The battery gauge is off, too. Do a restart and the gauge will jump to a higher level. It also frequently shuts down unexpectedly even when the battery still shows 12-13% juice left. Rarely does it go below that before going kaput.
Alas, the iPod Touch 7, just like the iPod Touch 6, is the ONLY i-device in Apple's line up for which they DON'T give the Wi-Fi battery life! That is a HUGE RED FLAG.
No wonder they didn't provide that info for the IPT 6. It's probably the same reason they haven't given it for the IPT 7 — a tiny battery that cannot support Wi-Fi well at all.
If anyone's in the market for an IPT, it'd be better to get an iPhone SE and simply not activate the cellular service. Costs about $50-100 less and you'll get superb battery life! And, a device that's easier to hold!