Editing AIBO (section)

===Second generation models (2x0, 31x)===
====ERS-210====
The ERS-210 was designed to look like a lion cub but was essentially a dog-shape with a flat bull terrier face and [[Jack Russell Terrier]] appearance, available in black, silver, gold, red, blue, green and white. It featured [[speech recognition]] capabilities and was the most popular AIBO model with over 65,000 units sold. It sold for around $1,500 at launch which was later reduced to less than $1,000.

====ERS-220====
The ERS-220 had a more futuristic design based on a space exploration robot concept by Shoji Kawamori. It had a chrome finish with headlights and colored LEDs. Between 5,000 and 7,000 units were sold, priced at 180,000 yen. Remote operation was possible through an optional wireless local area network.  Specifications: height 29.6&nbsp;cm, 1.5&nbsp;kg weight, 1.5 hours (default) continuous operation time, 2.5 hours or more operation with a re-celled battery, 16 degrees of freedom (drive unit).

====ERS-210At/220A====
Variants of ERS-210/220 with an improved CPU and head clutch. Nearly identical in appearance to the earlier models, they were distinguished by the Super Core logo on the underside of the body. US$1299 at launch.

====ERS-31x (Latte and Macaron)====
The ERS-31x models had an "AIBO's heart" slogan. The original production design illustrator was Katsura Moschino. The price was 98,000 yen or US$950.
The "Latte" (ERS-311) is an off-white/cream color and is considered the "friendly" model. The "Macaron" (ERS-312) is mostly black with cream accents and is considered the "naughty" model. The "Pug" (ERS-31L) is the least common of the three and was $200 cheaper. The 31x series dogs are considered to look like a [[bichon]] puppy or a bear cub.

====ERS 31xB====
These models are aesthetically identical to the ERS-311 and ERS-312 and feature Bluetooth connection to a handheld viewer (Japan only) which would "translate Aibos thoughts and feelings into text" and enable the handler to play games with them.