A Multi-Site Study to Assess the Effect of Availability of a Heated Tobacco Product on Smoking Abstinence Among Current Primary Cigarette Smokers

Inclusion Criteria: * Able to read, understand, and are willing to sign an Informed Consent Form (ICF) and complete questionnaires written in English. * Generally healthy male or female, between 21 and 65 years of age, inclusive, at the time of consent, verified with government-issued identification. * All female (assigned at birth) candidate participants who agree to take the pregnancy test on site and receive a negative result, and who affirm at the SEV that they are not pregnant or intending to become pregnant. Note: Participants who identify as "intersex" or "unknown" during screening, will be required to take a pregnancy test if they wish to take one. * Currently smoke at least five combustible cigarettes on smoking days in the past 30 days. * Smoke combustible cigarettes on 15 or more of the past 30 days. * Smoked at least 100 factory-made filtered menthol and/or non-menthol combustible cigarettes in their lifetime prior to the Site Enrollment Visit. * Must indicate a neutral/positive intention to use at least one stick variant at the Site Enrollment Visit. * Own a smartphone (iOS or Android) with internet access to download a study application to access surveys and the capability to receive notifications. * Agree to participate in the study and to abide by the study restrictions and requirements, as described in the ICF. * Must try all four stick variants during the 1-week product trial period. * Must indicate a neutral/positive intention to use at least one stick variant following the product trial period. Exclusion Criteria: * Female participants who are pregnant or breastfeeding or planning to become pregnant or start breastfeeding within the next 6 months based on self-report. * Male participants who self-report they are not willing to use a barrier method of contraception (e.g., a condom with spermicide) or refrain from donating sperm from the time of the signing of the ICF until the end of the study, unless they have undergone a vasectomy or are abstinent from heterosexual intercourse, or their female partner was not able to bear children. * Female participants who self-report not using adequate methods to prevent pregnancy. * Persons with pacemakers or other embedded electronic medical devices fitted. * Participants who self-report having an unstable heart condition, severe hypertension, or diabetes. * Individuals who respond with 'Poor' or 'Don't know' to general physical or mental health. * Participants who have used electronic nicotine delivery system (ENDS), nicotine pouches, HTP or smokeless tobacco (i.e., chewing tobacco, snus, or snuff) products, other combustible tobacco/nicotine products, and other oral nicotine products (tablets, gums, and lozenges) on 5 or more days in the past 30 days. * Participants who have used a nicotine replacement therapy (NRT) product or a prescription drug to help stop smoking (e.g., varenicline, bupropion) in the past 30 days. * Employee of a company that manufactures tobacco or HTPs. * Persons who are personally, have household members, or have close family or friends in litigation with a company that manufactures tobacco or HTPs. * Have taken part in a tobacco/nicotine research study in the past 30 days.