Listings describe built-in rechargeable batteries with reported standby times of about 3 to 7 days and a full-charge time of roughly 2 hours. A few entries list the battery as "1 Non-Universal Lithium Ion."
Common features include built-in educational games (often cited as 16 games), a front-facing camera for photos and video recording, and a music player that can accept MP3s via micro SD or by transferring files from a computer.
Watch bodies are listed as ABS plastic or other plastics. Straps are commonly silicone, rubber, soft adjustable silicone, or resin, and closures are typically buckle or buckle-style clasps.
Case diameters are shown around 40–43 millimeters. Some models list the band size as medium and most note adjustable straps or buckle closures to help achieve a child-sized fit.
Charge and connectivity depend on the model: several list a micro USB connection and include a charging cable, some mention a USB port for charging and data transfer, and others list Bluetooth as a wireless option.
