When choosing a mentor, it is important to consider their relevant skills, experience, and perspective, as well as their compatibility with your personality, goals, and values. Additionally, you should take into account their availability, accessibility, and communication style. To ensure you have the right fit, look for a mentor who has a successful track record in product R&D and can demonstrate their knowledge in concrete ways. They should also have a similar or complementary style of thinking, working, and learning as you to challenge you to grow. Additionally, they should be supportive, respectful, honest, flexible, adaptable, open-minded, accessible, responsive, reliable and able to communicate regularly and effectively. Before committing to the mentorship relationship, make sure you both understand each other's expectations and roles; agree on the frequency, duration and format of meetings; establish topics and objectives; decide on methods of communication; and set some ground rules.