The Sony AIBO ERS-210 is one of the second-generation AIBO robot dogs, known for its upgraded features and more expressive personality compared to earlier models. Your description suggests the unit is tested and comes with accessories, which adds value to it for collectors and users who want a functional and complete set. Here’s what makes the ERS-210 stand out:

Key Features of the Sony AIBO ERS-210:

1. Improved Design:
   • The ERS-210 was an upgrade over the ERS-110 and ERS-111 models, with a more streamlined, polished design. Its body is more lifelike, and it comes in various colors like silver, blue, and gold, though the silver version is the most common.
   • It features articulated limbs for more fluid movement, and its LED eyes add to its expressiveness, showing different emotions.
2. Enhanced AI Personality:
   • One of the main highlights of the ERS-210 is its ability to develop a unique personality over time. It can “learn” from its owner and environment, reacting to interactions, voice commands, and touch.
   • The robot can express emotions such as joy, sadness, and curiosity through its body language and sounds, making it a more engaging companion than earlier models.
3. Movement and Autonomy:
   • The ERS-210 can walk, sit, stand, and wag its tail, as well as move its head to scan its surroundings. It has a range of pre-programmed behaviors and can explore autonomously.
   • Equipped with sensors to detect obstacles, it can navigate around objects and interact with its environment.
4. Voice Recognition and Commands:
   • The ERS-210 responds to voice commands, allowing you to teach it tricks and interact with it. It can recognize certain phrases like “sit” or “come here,” and will respond accordingly.
5. Tested and Functional:
   • Since the unit has been tested, this suggests that it’s in working condition, which is important for a product of this age. Fully functional AIBO units are much more desirable to collectors and fans compared to non-working or “junk” models.
6. Included Accessories:
   • The mention of accessories, such as its original charging station, toy pink ball, and bone, enhances the value of the ERS-210. These accessories allow the AIBO to interact in more playful ways and are often missing in used units.
   • The charging station and battery are particularly valuable since replacement parts for older AIBOs can be hard to find. A tested, working robot with original accessories adds significant worth to the set.
7. Camera and Sensors:
   • The ERS-210 has a camera in its head that helps it recognize people and objects. It uses this to interact with its environment and develop its behaviors based on what it “sees.”
   • It also has touch sensors on its head, back, and chin, allowing it to respond to being petted.

Specifications:

• Dimensions: 16 x 9.5 x 15 inches
• Weight: 1.5 kg
• Battery Life: About 1.5 hours of active playtime with a full charge.
• Release Date: 2000

Collectibility and Value:

The Sony AIBO ERS-210, especially in tested, working condition, is highly collectible. With the included accessories, it’s even more appealing to both collectors and enthusiasts. The fact that it’s tested ensures you’re getting a functional robot, which is critical since repairs and replacement parts can be expensive and difficult to source.

This model is particularly popular among AIBO enthusiasts because of its durability, advanced features for its time, and expressive interactions. It often ranks as one of the more beloved models from the earlier AIBO series.

Conclusion:

A tested Sony AIBO ERS-210 with accessories is a great find, especially for anyone looking to experience the full range of what AIBO has to offer. It offers a perfect blend of nostalgic charm and advanced robotics, with interactive capabilities that still impress today. Having all the original accessories and a working robot makes it a valuable item for collectors and users alike.